Sentence Completion Generator
Generates a random fill-in-the-blank sentence from a bank of 18 hand-authored prompts, each with one clearly correct missing word, revealed on request — a sentence that fixes the grammar and tense so a learner's attention goes entirely to the vocabulary choice being tested.
What this generator does
Generates a sentence with one word missing, for students to supply. The sentence fixes the grammar and the tense, so attention goes to the single word being tested.
What's in the question bank
This generator draws from 18 written questions, each stored with its answer. Every question is equally likely, and questions can repeat across separate draws — the tool does not track what it has already shown you.
- Complete the sentence: She opened the door and stepped ___ the room.
- into
- Complete the sentence: Neither of the twins ___ interested in football.
- is
- Complete the sentence: We ___ been waiting for over an hour.
- have
A fixed sample so this page stays the same between visits. The answer is drawn with the question and held until you choose to reveal it, so pressing Reveal never changes what the answer is.
How to use this tool
- Press new sentence for a fill-in-the-blank prompt.
- Reveal the answer when ready.
Worked examples
- A drawn sentence
- "She opened the door and stepped ___ the room." → into
Common use cases
- Grammar practice at home or school
- Vocabulary and sentence-structure exercises
- Quick English warm-ups
Randomness and fairness
Sentences are drawn uniformly with the browser's cryptographic random number generator, with no grading by age or difficulty — read a draw before setting it.
For how randomness is produced across the whole site, see how Generate Random works.
Limitations and good to know
- The bank holds 18 sentences, so a session of more than a handful of presses will repeat one — there is no memory of what has already been shown.
- Every prompt has exactly one accepted answer, even where a different word would also read naturally in context; the reveal shows the intended answer only.
- Sentences are written for general grammar practice rather than levelled by age or difficulty, so a set may mix an easy and a harder prompt back to back.
Practical tips
- Give the same sentence to a whole class and ask for the missing word before revealing it; where two words fit, that is the discussion.
- For assessment, use several sentences rather than one. A single sentence tests one word, not the grammar behind it.