Comma before 'which' Exercises: 12 Questions with Answers

Question 1

Choose the correctly punctuated sentence.

Accepted Answer

The app that I downloaded yesterday keeps crashing.

Answer

The app, that I downloaded yesterday, keeps crashing.

Answer

The app that, I downloaded yesterday keeps crashing.

Question 2

Which sentence is correct?

Accepted Answer

Cities that invest in cycling infrastructure see fewer traffic jams.

Answer

Cities, that invest in cycling infrastructure, see fewer traffic jams.

Answer

Cities that, invest in cycling infrastructure, see fewer traffic jams.

Question 3

Choose the sentence that needs a comma before 'because'.

Accepted Answer

The lecture was postponed, because (and this surprised everyone) the professor was ill.

Answer

He cancelled the trip because the flights were too expensive.

Answer

She apologised because she arrived late.

Comma before 'which' exercises