Question

【题目】— Quite a few laws and rules on food safety ________ into use last month.

— Can you tell me what they are?

A.were puttingB.have been putC.were put

Answer 1

【答案】C

【解析】

句意：——上个月，不少有关食品安全的法律法规开始实施。——你能告诉我它们是什么吗?

考查一般过去时的被动语态。were putting过去进行时；have been put现在完成时的被动语态；were put一般过去时的被动语态。put into use使用，主语“Quite a few laws and rules”与动词put之间是动宾关系，此处用被动语态；结合题干中“last month”可知此处用一般过去时的被动语态，其结构为was/were done。故选C。