Published March 11, 2026 · Worksheet Creation
Fill in the blanks (also called gap-fill or cloze exercises) is the most commonly used exercise type in English language teaching. It's versatile, adaptable to any CEFR level, and can test grammar, vocabulary, collocations, or reading comprehension depending on what you remove from the text. Yet many teachers create gap-fill exercises that are either too easy, too difficult, or test the wrong thing entirely.
This guide covers the different types of gap-fill exercises, how to create effective blanks, scaffolding by CEFR level, the advantages of AI-generated vs. manually created exercises, and grading strategies for both objective and open-ended gap-fill tasks.
Gap-fill is most effective for:
Gap-fill is less effective for testing speaking, listening, or creative writing skills. For those, use Discussion Questions, Listening Comprehension, or Paraphrasing exercises instead.
Remove grammar words (verbs, prepositions, articles, auxiliary verbs) to test specific structures. Students must supply the grammatically correct form.
Example: "She ___ (go) to the cinema yesterday but ___ (not enjoy) the film."
Remove content words (nouns, adjectives, verbs) to test vocabulary knowledge. Often includes a word bank to scaffold the task.
Example: "The ___ was delayed by two hours due to bad weather." (word bank: flight, concert, appointment)
Remove words without providing options. Students must use grammar and vocabulary knowledge together with contextual understanding to supply the missing word. This is the most challenging format and appears in FCE/CAE/CPE exams.
Provide the root word and students must supply the correct form (noun, verb, adjective, adverb). Tests morphological awareness.
Example: "The ___ of the new building took three years." (CONSTRUCT)
The teacher selects specific words to remove based on teaching objectives. Unlike random deletion cloze, each gap targets a specific learning point.
When providing options (word bank or multiple choice), the distractors should:
At lower CEFR levels (A1-A2), distractors can be more obviously wrong. At higher levels (B2-C2), distractors should test nuanced distinctions that require deep understanding.
| Level | Gap Density | Support | Word Types Removed |
|---|---|---|---|
| A1 | 1 gap per 15-20 words | Word bank always provided, pictures if possible | Simple nouns, basic verbs |
| A2 | 1 gap per 12-15 words | Word bank provided, first letter hints optional | Verbs (tenses), prepositions, adjectives |
| B1 | 1 gap per 10-12 words | Word bank optional, root words for word formation | Grammar words, collocations, linking words |
| B2 | 1 gap per 8-10 words | No word bank (open cloze), root words for word formation | Phrasal verbs, advanced collocations, discourse markers |
| C1-C2 | 1 gap per 6-8 words | No support (pure open cloze) | Nuanced vocabulary, idioms, academic language |
For objective gap-fill (one correct answer), grading is straightforward. For open cloze exercises where multiple answers may be valid, consider:
For individual sentences: 1 blank per sentence, 8-12 sentences total. For continuous text (cloze): 8-15 blanks depending on text length. Too many blanks make the text incomprehensible; too few don't provide enough practice.
At A1-A2 levels, always provide a word bank. At B1, make it optional (you can include it for weaker students). At B2-C2, open cloze without a word bank is more appropriate and mirrors exam formats.
Yes. Edooqoo's AI evaluates open cloze answers for both grammatical accuracy and contextual fit. It accepts multiple valid answers and provides mastery scores that teachers can review and adjust.
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