• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Home of English Grammar
  • Home
  • Course
  • Exercises
  • Grammar Rules
  • Matches
  • Posts
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Vocabulary Lists
  • Archives
    • Social Media Posts
    • Writing Guides
  • Join free

It-Cleft Sentences Exercise

July 8, 2026 C1pdf

Complete the 12 sentences below. Choose the best answer for each one.

Progress 0 of 12 answered
1It was not until the external auditors had signed off on the figures that ............... the acquisition.
Wrong!
In an it-cleft with 'It was not until... that...', the clause after 'that' keeps normal word order: "the board approved". Inversion is used only when 'Not until...' itself is fronted: 'Not until the auditors had signed off did the board approve the acquisition.'
2It was in the temporary warehouse ............... the engineers finally reproduced the fault.
Wrong!
In an it-cleft focusing on a place, use "where" before the clause that happened there.
3It was ............... who first questioned the reliability of the survey.
Wrong!
In formal C1 usage, a subject-focused cleft takes the subject form after be: "she".
4It was ............... the delay that the project manager accepted full responsibility.
Wrong!
The noun "responsibility" takes "for" in this meaning, so the cleft focus is "for".
5It ............... the revised safety protocols, rather than the new software, that reduced the accident rate.
Wrong!
In an it-cleft the verb agrees with the subject 'it', so it is always singular: "was", even when the focused noun phrase is plural.
6It was the committee's abrupt change of policy ............... unsettled the investors.
Wrong!
For a focused thing or event, the neutral cleft connector is "that".
7It was ............... whom the minister consulted before announcing the reform.
Wrong!
Because the focused pronoun is the object of "consulted", use the object form "him".
8It was during the second round of negotiations ............... the two sides reached a compromise.
Wrong!
A cleft focusing on a time expression can use "when", so the correct option is "when".
9The cost itself was within budget; it was ............... that jeopardised the launch.
Wrong!
The first clause says the cost was acceptable, so the cleft must emphasize "not the price but the delivery schedule".
10It was ............... that the report misled the analysts.
Wrong!
To focus the reason in an it-cleft, use the reason clause beginning with "because": "because the database had not been updated".
11It is the regional coordinators ............... will brief the volunteers before the inspection.
Wrong!
For a human focus, use "who" in the cleft clause.
12It was the final paragraph of the memo that the consultant ............... most carefully.
Wrong!
The clause after an it-cleft needs a finite verb, so the correct form is "wrote".

Exercise complete

0/ out of 12 correct answers
Challenge a friend
More Exercises →

Answers

  1. It was not until the external auditors had signed off on the figures that the board approved the acquisition.
  2. It was in the temporary warehouse where the engineers finally reproduced the fault.
  3. It was she who first questioned the reliability of the survey.
  4. It was for the delay that the project manager accepted full responsibility.
  5. It was the revised safety protocols, rather than the new software, that reduced the accident rate.
  6. It was the committee’s abrupt change of policy that unsettled the investors.
  7. It was him whom the minister consulted before announcing the reform.
  8. It was during the second round of negotiations when the two sides reached a compromise.
  9. The cost itself was within budget; it was not the price but the delivery schedule that jeopardised the launch.
  10. It was because the database had not been updated that the report misled the analysts.
  11. It is the regional coordinators who will brief the volunteers before the inspection.
  12. It was the final paragraph of the memo that the consultant wrote most carefully.

Improve your English grammar, vocabulary and writing

We take you step by step from beginner to advanced, even if you struggled with English at school or have always had trouble remembering the rules.

  • 10 modules, 105 lessons and 688 questions
  • Just log in and learn anytime and anywhere
  • Your progress is saved in your account
  • Download the 2027 Grammar Guide (PDF)

Related lesson in the course Clefts, fronting and information flow Module 10: Precision & emphasis · Lesson 2

Join free

Already have an account? Sign in

See what’s in the course

Primary Sidebar

2.4M761.4K165.8K

Free 2027 Grammar Guide

  • Download Grammar Guide (PDF)
  • Online grammar course, A1 to C2
  • Weekly exercises and vocabulary
  • Join over 3 million English learners

We respect your privacy. Unsubscribe anytime.

Already have an account? Sign in

Grammar Checker - Try Now

Latest Posts

  • 100 Best Synonyms for “Proposition” October 23, 2026
  • 100 Best Synonyms for “Stagnation” October 23, 2026
  • 100 Best Synonyms for “Dumb” October 23, 2026
  • The origin and meaning of “off the cuff” October 23, 2026
  • 100 Phrases for Declining Requests at Work Politely October 23, 2026
  • 100 Best Synonyms for “Plausible” October 23, 2026
  • Maybe, perhaps, possibly, conceivably, probably and definitely: How to choose October 23, 2026
  • Endemic vs. pandemic: what is the difference? October 23, 2026
  • What Clauses Exercise October 23, 2026
  • 100 Best Synonyms for “Clunky” October 23, 2026
Home of English Grammar

Free English grammar exercises, rules and vocabulary lists, with new exercises every week. Join the leading English grammar site with over 3 million followers.

Join free

Learn

  • Exercises
  • Matches
  • Grammar rules
  • Vocabulary lists
  • Writing guides
  • Online tools

More

  • Top social media posts
  • Various posts
  • Contact

Account

  • Join free
  • Grammar Course
  • Free grammar guide (PDF)

Copyright © 2026 EnglishGrammar.org

  • Disclaimer
  • Privacy policy
  • Terms
  • Sitemap