Câu hỏi: An electricalfault could have caused the fire.

A. An electrical fault could have been caused by the fire.

B. An electrical fault could have caused the fire.

C. The fire could have been caused by an electrical fault.

D. The fire could have caused an electrical fault.

Câu 1: Somebody cleans the room everyday.

A. The room everyday is cleaned.

B. The roon is everyday cleaned.

C. The room is cleaned everyday.

D. The room is cleaned by somebody everyday.

Câu 2: Somebody is using the computer at the moment.

A. The computer is being used at the moment

B. The computer at the moment is being used.

C. The computer is being used by somebody at the moment.

D. The computer is used at the moment.

Câu 3: Our secretary ...............your letter to Head Office.

A. has forwarded

B. forward

C. was forwarded

D. forwarded

Câu 4: They think that the prisoner escaped by climbing over the wall

A. The prisoner is thought to escape by climbing over the wall.

B. The prisoner is thought escaped by climbing over the wall.

C. The prisoner is thought having escaped by climbing over the wall.

D. The prisoner is thought to have escaped by climbing over the wall.

Câu 5: They know that the Prime Ministeris in favor of the new law.

A. The Prime Minister is known to have been in favor of the new law.

B. They know the Prime Minister to be in favor of the new law.

C. The Prime Minister is known to be in favor of the new law.

D. They know the Prime Minister to have been in fovor of the new law.

Câu 6: We found that they had cancelled the game.

A. The game had been cancelled.

B. We found that the game had been cancelled.

C. We found that the game had been cancelled by them.

D. The game were found to be cancelled.