IELTS Reading Sentence Completion: Copy Exactly (2026)
Sentence Completion is free marks if you copy exact passage words within the word limit. Learn the predict-scan-copy method, 4 traps, timing, and a drill that ends word-limit errors.
Band9Prep Team
IELTS Preparation Experts

Sentence Completion is the closest thing to free marks in IELTS Reading: the answers sit verbatim in the passage, questions run in order, and the grammar of the gap tells you what to look for. Yet candidates lose a third of these marks to two avoidable errors — writing from memory instead of copying, and breaching the word limit.
Rule of the type: predict, scan, copy. Map: IELTS Reading question types.
What Sentence Completion Tests
You complete gapped sentences using words from the passage, within a stated limit (ONE WORD ONLY, NO MORE THAN TWO WORDS, NO MORE THAN THREE WORDS AND/OR A NUMBER). It tests precise locating plus exact reproduction — comprehension gets you to the sentence; discipline gets you the mark.
Example (illustrative, not a real exam question): Gap — "The lighthouse lens was made of ___." Passage — "The lighthouse lens was fashioned from solid crystal glass." Copy: crystal glass (two words, exact form). "Glass" alone loses precision; "crystalline glass" invents vocabulary and scores zero.
Step-by-Step Method
Step 1: Read the word limit first, circle it
The limit shapes everything. ONE WORD ONLY means one token — no articles smuggled in. Write the limit above every gap before reading further.
Step 2: Predict the gap's grammar and content
Note the part of speech (made of ___ → material noun; declined by ___ → number/percentage; in ___ → year/place) and one expected synonym. This prediction is your scanning filter.
Step 3: Scan content words, read the source sentence
Questions run in order: locate Question 1's content words, then advance. Read the full source sentence — the answer's neighbours confirm you have the right occurrence (repeated words appear in several paragraphs). Pay special attention to sentences with commas or relative clauses: the answer often sits in the subordinate part while the scanning keywords sit in the main part, so skimming only the first half of a long sentence misses it. If the content words land you in a paragraph that discusses the right topic but the sentence lacks the gap's grammar slot (e.g. you need a material noun and the sentence has none), you have the wrong occurrence — keep scanning forward rather than forcing a fit. Forcing a near-match from the wrong sentence is how Traps 3 and 4 happen.
Step 4: Copy exactly, fit the gap grammatically
Lift the words character-for-character: same spelling (British/American as printed), same singular/plural, same hyphenation. Then read your completed sentence: it must be grammatical. If not, you grabbed the wrong form.
Step 5: Count words on your fingers
Count every token except the hyphenation exception. If over limit, drop articles/adjectives from the edges — never swap in synonyms to compress.
| Limit | Counts as | Example |
|---|---|---|
| ONE WORD ONLY | 1 token | glass |
| NO MORE THAN TWO WORDS | ≤2 tokens | crystal glass |
| + AND/OR A NUMBER | number free | 1897 / 42 per cent |
4 Traps With Examples
Trap 1: The Memory Paraphrase
You remember the meaning and write your own words.
Example (illustrative, not a real exam question): Passage — "The committee rejected the proposal outright." Gap — "The committee ___ the proposal." You write turned down (correct meaning, zero marks). The passage verb is rejected — copy it.
Defence: fingers off the pen until your eyes are on the source sentence. No sentence in view, no answer written.
Trap 2: The Word-Limit Slip
A three-word answer under a two-word limit.
Example (illustrative, not a real exam question): Passage — "powered by compact solar panels". Limit — TWO WORDS. Compact solar panels (3) scores zero; solar panels (2) scores. The adjective is expendable; the limit is not.
Defence: count before moving to the next question, every time. See how band scores convert — one limit slip can cost half a band at the boundary.
Trap 3: The Wrong Occurrence
The gap word appears twice; you copy the wrong instance.
Example (illustrative, not a real exam question): "Glass" appears in ¶B (windows) and ¶D (the lens). The gap asks about the lens — only ¶D's crystal glass fits. Scanning for the single word "glass" lands you in ¶B first.
Defence: scan with two anchors (gap noun + neighbouring content word: lens + glass), not one.
Trap 4: The Grammar Mismatch
Copied words are from the right sentence but the wrong form.
Example (illustrative, not a real exam question): Passage — "The towers collapse during storms." Gap — "The ___ of the towers during storms." You need the noun collapse, matching The ___ of — copying a verb form or adding collapsing breaks the gap grammar and usually the limit.
Defence: read the completed sentence aloud in your head. Ungrammatical = wrong extraction, re-check the source sentence.
Time Budget
- Total: 6–8 minutes for 4–6 sentences (~75 seconds each).
- Do Sentence Completion before scattershot types on the same passage (Matching Information): its in-order locating builds a free map for everything after. Full sequencing: strategies for Band 7.
- If one gap resists after 2 minutes, fill your best copy-guess and move on — never sacrifice a whole completion set for one gap.
Worked Mini-Example
Example (illustrative, not a real exam question). Limit: NO MORE THAN TWO WORDS. Gaps: (1) "The lens was fashioned from ___." (2) "The tower walls were coated with ___ paint."
Passage: ¶C "The lens was fashioned from solid crystal glass, the finest available." ¶D "The walls were coated with weather-resistant paint, renewed every spring; ordinary glass windows were fitted the same year." Gap 1: predict material noun → source gives three words (solid crystal glass) → compress to crystal glass (drop the leading adjective, Trap 2). Gap 2: predict paint-type adjective → glass appears here too (windows) but the gap anchors are walls + paint → copy weather-resistant (hyphenated = one word, within limit; Trap 3 avoided by two-anchor scanning). Both answers copied character-for-character, both counted on fingers.
Practice Drill: Copy-Exact (10 Minutes)
- Take 6 gapped sentences from any practice set (practice guide).
- For each: write the predicted part of speech, then the source sentence number, then the copied answer.
- Mark strictly: wrong form, wrong limit, or synonym = zero, no partial credit.
- Log errors in three buckets: memory paraphrase / limit slip / wrong occurrence. Target: 6/6 with zero limit slips two sessions running.
Bottom Line
Find the sentence, copy the words, count the words. Three mechanical acts, no interpretation — which is why this type should be your passage opener. Next: summary completion uses the same hands with a wider net.