Question

【题目】The fire _______ by the firemen in that building an hour ago.

A.is put outB.was put outC.put outD.puts out

Answer 1

【答案】B

【解析】

句意：一小时前那栋楼的消防队员把火扑灭了。

A. is put out被扑灭；一般现在时态的被动语态；B. was put out被扑灭；一般过去时态的被动语态；C. put out扑灭；原形；D. puts out扑灭，第三人称单数。根据an hour ago.可知用一般过去时态的被动语态，其结构是was/were done的形式。根据题意，故选B。