Sentence Completion questions give you a sentence with one or two missing words and four options. Your job is to pick the choice that makes the sentence grammatically correct and logically complete. These are scoring questions in the NDA English paper because they test reading sense more than rote learning. At The Cavalier we treat them as quick, reliable marks once you learn to read the clues.
What Sentence Completion Tests
In a Sentence Completion question, the examiner removes one word (sometimes two) and asks you to restore the sentence so that it reads naturally. The blank may need a noun, verb, adjective, adverb, preposition or connector. Unlike pure vocabulary questions, here the surrounding words tell you exactly what kind of word fits.
The NDA paper usually carries several such items, and they reward students who read carefully rather than those who memorise long word lists. A calm, methodical reader can clear most of them.
The right answer must satisfy two filters at once: grammar (the word must fit the sentence structure) and sense (the word must match the meaning). If a choice fails either filter, reject it.
Following Wren & Martin, remember that every English sentence has an underlying logic. The blank is simply a gap in that logic, and the clue words around it point straight to the answer.
Because these questions need no special preparation beyond sound grammar and steady reading, candidates who practise a method consistently tend to clear almost every one of them. That makes Sentence Completion a smart place to invest your revision time, since the return per hour studied is high compared with memorising endless word lists.
Always Read the Whole Sentence First
The biggest mistake students make is reading only up to the blank and then jumping to the options. The part after the blank often carries the decisive clue.
Consider: "Although he was very ______, he completed the marathon." If you stop at the blank you might guess "fit". But the word although signals a contrast, and the second half says he completed the marathon. So the blank needs a negative idea like tired or exhausted, not "fit".
Read the full sentence twice before looking at the options. On the second reading, predict your own word for the blank. Then find the option closest to your prediction.
Predicting your own answer protects you from clever distractor options that look attractive but break the meaning.
Connector Words Decide the Direction
Connectors are the strongest clues in Sentence Completion. They tell you whether the two halves of a sentence agree or disagree in meaning.
Contrast connectors
but, although, though, however, yet, whereas, in spite of, despite, nevertheless → the second idea opposes the first.
Cause and result connectors
because, since, as, so, therefore, hence, thus, consequently → the second idea follows from the first.
Addition connectors
and, also, moreover, besides, furthermore, as well as → the second idea continues in the same direction.
A contrast connector demands an opposite word; a cause or addition connector demands a similar word. Spot the connector, decide the direction, then choose.
Example: "She is honest and ______." Here and asks for a positive word that fits alongside honest, such as sincere. A negative word like "cunning" would break the logic.
Sometimes the connector is hidden inside a phrase rather than a single word. Expressions such as on the other hand, even so and in contrast all signal opposition, while as a result and for this reason signal a consequence. Train your eye to spot these multi-word signals just as quickly as you spot "but" or "because", because the examiner often uses them to test sharper readers.
Use Grammar to Eliminate Options
Even when several words match the meaning, only one usually fits the grammar. Use these quick checks drawn from the Oxford Guide and Wren & Martin.
Subject-verb agreement
A singular subject takes a singular verb. "The list of items ______ on the table" needs is, not "are", because the subject is list, not items.
Tense consistency
Keep the verb in the same time-frame as the rest of the sentence. "Yesterday he ______ to school" needs a past form like walked.
Part of speech
If the blank sits before a noun, it usually needs an adjective; if it modifies a verb, it needs an adverb. "She sang ______" needs an adverb like beautifully, not the adjective "beautiful".
Choosing a word that means the right thing but is the wrong part of speech. "He behaved very ______" cannot take the noun "courage"; it needs the adverb "courageously".
When the Blank Is a Preposition or Article
Some blanks test fixed grammar rather than meaning. Here you must know the standard usage.
Prepositions after verbs and adjectives
Many words pair with a fixed preposition: afraid of, good at, interested in, depend on, accused of, capable of, married to. "He is afraid ______ dogs" can only take of.
Articles a, an, the
Use a before a consonant sound and an before a vowel sound. "He is ______ honest man" takes an because honest begins with a vowel sound (the h is silent).
Build a short list of common verb-plus-preposition pairs and revise it weekly. These appear again and again in NDA papers and are pure marks once memorised.
For such blanks there is no logic clue to find; the answer is simply the accepted form of English, so learning the standard combinations is the only reliable route.
A useful habit is to say each option aloud in your head with the surrounding words. "Good in maths" sounds wrong while "good at maths" sounds right, and your trained ear catches the difference instantly. The more you read and listen to correct English, the more dependable this ear becomes, which is exactly why daily reading is part of every serious NDA English routine.
Solving Double-Blank Questions
Some questions remove two words and give option pairs. The trick is to solve the easier blank first and eliminate any pair whose word does not fit there.
Take: "He is so ______ that he never ______ his temper." The first blank suggests a calm quality, and the second describes losing control. A pair like calm / loses fits both. Any pair whose first word means the opposite, like "angry", is rejected immediately.
In double blanks, a pair is correct only if both words fit. One wrong word kills the whole option, so use it to eliminate fast.
This elimination approach saves time: instead of testing all four pairs fully, you knock out two or three by checking just one blank. With practice you will often reach the correct pair after examining only the first word, which is a real advantage in a timed paper.
Vocabulary Still Matters
Grammar handles many blanks, but some require you to know the precise meaning of the options. A strong working vocabulary turns hard questions into easy ones.
Watch for near-synonyms with different shades. Famous (well known) and notorious (well known for something bad) both mean widely known, but only one fits "The thief was ______ across the city." The negative context demands notorious.
When two options share a meaning, look at the tone of the sentence. A positive context takes a positive word; a negative context takes a negative word.
Read newspaper editorials daily and note how educated writers choose exact words. This habit, more than any list, sharpens the instinct that Sentence Completion rewards.
It also helps to group words by family. Knowing that frugal, thrifty and economical all sit near "careful with money" lets you choose confidently when one of them appears. Equally, learn the small differences inside a family: thrifty is praise, while miserly is criticism. The NDA examiner loves testing these fine distinctions, so a few minutes spent sorting near-synonyms into positive and negative shades pays off directly in the exam hall.
The Cavalier Five-Step Method
Use this fixed routine for every Sentence Completion question so you never solve by random guessing.
- Read the full sentence twice, ignoring the options.
- Spot the clue: a connector, a contrast, a fixed preposition or a tense marker.
- Predict your own word for the blank before reading the choices.
- Match and eliminate: discard options that fail grammar or meaning.
- Re-read the sentence with your chosen word to confirm it reads naturally.
Step five takes three seconds and catches silly errors. Never skip it, especially when two options feel close.
Worked Example
Let us apply the method to a typical NDA-style item.
Choose the word that best completes the sentence: "Although the medicine was bitter, the child swallowed it ______ any complaint." Options: (a) with (b) without (c) for (d) against.
Notice how the connector "although" pointed straight to the answer. The grammar (a preposition before "any complaint") and the meaning both agreed on without.
Common Mistakes to Avoid
Most lost marks come from a handful of repeated errors. Train yourself out of them now.
- Reading only half the sentence and missing the clue after the blank.
- Ignoring connectors and choosing a word that breaks the contrast or cause logic.
- Picking the hardest-looking word, assuming the examiner wants a tough vocabulary item. The simplest fitting word is often correct.
- Forgetting agreement of subject and verb or singular and plural.
- Skipping the re-read in step five and leaving a careless error uncaught.
Falling for a "trap" synonym that has the right general meaning but the wrong tone or part of speech. Always confirm both grammar and sense.
Previous-Year Style Practice
Try this question exactly as it would appear in the NDA paper, then check the reasoning.
Q. Fill in the blank with the most appropriate word: "He could not attend the function ______ he was unwell." (a) although (b) but (c) because (d) yet
Answer: (c) because. The first half states a result (he could not attend) and the second half gives the reason (he was unwell). A cause connector is needed, and "because" supplies it. The contrast words "although", "but" and "yet" would all break the cause-and-result logic.
Practise five such items daily from your year-wise paper extracts. Speed and accuracy build together once the method becomes automatic.
Quick Revision
- Read the whole sentence before touching the options.
- Find the clue: connector, contrast, fixed preposition or tense.
- Contrast connectors need opposite words; cause and addition need similar words.
- Check grammar: agreement, tense and part of speech.
- For double blanks, solve the easier blank and eliminate.
- Predict your own word, match, then re-read to confirm.
Sentence Completion is one of the most predictable scoring areas in NDA English. Drill the five-step method until it is second nature, and these become near-certain marks on exam day.
Frequently asked questions
How many Sentence Completion questions come in the NDA exam?
The number varies year to year, but Sentence Completion and Fill in the Blanks together form a regular and reliable chunk of the English paper. Treat them as high-priority scoring questions.
Do I need a huge vocabulary to score here?
Not always. Many blanks are solved purely by grammar and connector logic. A moderate vocabulary plus the five-step method handles most questions; daily reading then sharpens the harder ones.
What is the single most important habit for these questions?
Read the entire sentence before looking at the options and predict your own word for the blank. The clue after the blank often decides the answer, so never stop reading at the gap.
How do I handle questions with two blanks?
Solve the easier blank first and eliminate any option pair whose word does not fit there. A pair is correct only if both its words suit the sentence, so one wrong word rules it out.
How should I practise Sentence Completion at The Cavalier?
Do five to ten items daily from previous-year extracts, applying the five-step method each time. Review every wrong answer to see which clue you missed, and keep a small list of fixed preposition pairs.
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