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Defining and Non-Defining Relative Clauses Exercise

November 4, 2026 B2pdf

Choose the best relative-clause completion for each sentence.

Progress 0 of 12 answered
1Claims may be submitted at any time before 30 June, but not later. The deadline ............... all claims must be submitted is 30 June.
Wrong!
"by which" means no later than the stated deadline; "on which" would mean specifically on that date.
2The agency’s translation team has eight members, and every member specialises in legal documents. The team, ............... specialise in this field, will handle the court project.
Wrong!
"all of whose members" matches the statement that every team member specialises in legal documents.
3Heavy snow closed the airport, ............... forced the organisers to postpone the conference.
Wrong!
"which" introduces a non-defining relative clause referring to the entire preceding situation.
4Mina submitted five designs, and two reached the final round. Mina, ............... had reached that stage, eventually won the contract.
Wrong!
"two of whose designs" correctly shows that two of Mina’s five designs reached the final round.
5Monitoring continued throughout the six-month trial and stopped when it ended. The trial, ............... participants were monitored weekly, produced encouraging results.
Wrong!
"during which" matches the monitoring that continued throughout the trial and ended with it.
6Of the twelve delegates, only two had attended this conference before. The delegates, ............... had attended previously, were all given updated security passes.
Wrong!
"only two of whom" matches the stated number of delegates who had attended before.
7A configuration error caused the server to fail, ............... users could not access the website.
Wrong!
"which is why" introduces the result of the server failure; the configuration error was the cause.
8The project depends on a funding model that guarantees long-term support. The funding model ............... the project depends is currently under review.
Wrong!
"on which" is required because a project depends on a funding model.
9Exactly 150 of the writer's letters in the archive were previously unpublished. The archive contains 200 letters from the same writer, ............... were previously unpublished.
Wrong!
"most of which" is accurate because 150 of the 200 letters were previously unpublished; "all of which" would wrongly include every letter.
10The company signed a three-year agreement. Staff may exchange overtime for leave only while it is in force. The agreement ............... staff may make such exchanges expires in December.
Wrong!
"under which" describes what employees are permitted to do while the agreement is in force.
11The board rejected both proposals because neither met the safety standard. The proposals, ............... met the standard, will not be reconsidered.
Wrong!
"neither of which" matches the statement that neither proposal met the safety standard.
12After six hours of discussion, the talks ended at midnight, ............... both sides immediately issued a joint statement.
Wrong!
"at which point" refers to the moment the talks ended, when the statement was issued.

Exercise complete

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Answers

  1. Claims may be submitted at any time before 30 June, but not later. The deadline by which all claims must be submitted is 30 June.
  2. The agency’s translation team has eight members, and every member specialises in legal documents. The team, all of whose members specialise in this field, will handle the court project.
  3. Heavy snow closed the airport, which forced the organisers to postpone the conference.
  4. Mina submitted five designs, and two reached the final round. Mina, two of whose designs had reached that stage, eventually won the contract.
  5. Monitoring continued throughout the six-month trial and stopped when it ended. The trial, during which participants were monitored weekly, produced encouraging results.
  6. Of the twelve delegates, only two had attended this conference before. The delegates, only two of whom had attended previously, were all given updated security passes.
  7. A configuration error caused the server to fail, which is why users could not access the website.
  8. The project depends on a funding model that guarantees long-term support. The funding model on which the project depends is currently under review.
  9. Exactly 150 of the writer’s letters in the archive were previously unpublished. The archive contains 200 letters from the same writer, most of which were previously unpublished.
  10. The company signed a three-year agreement. Staff may exchange overtime for leave only while it is in force. The agreement under which staff may make such exchanges expires in December.
  11. The board rejected both proposals because neither met the safety standard. The proposals, neither of which met the standard, will not be reconsidered.
  12. After six hours of discussion, the talks ended at midnight, at which point both sides immediately issued a joint statement.

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Related lesson in the course Non-defining relative clauses: extra information Module 08: Clauses & reporting · Lesson 2

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