They cancelled all flights because of fog. The passive form ...

★ Grammar TOEFL

They cancelled all flights because of fog. The passive form of the sentence is, because of fog, ____

A. All flights had cancelled

B. All flights were cancelled

C. All flights have been cancelled

D. They be cancelled

Preview next quiz:

In her letter my friend said that she was looking forward _____ from me again.

A. to hearing

B. hearing

C. to hear

D. to being heard