Question

【题目】These machines_____in their factory by themselves last year.

A. makeB. madeC. are madeD. were made

Answer 1

【答案】D

【解析】

句意：这些机器是去年他们自己在工厂制造的。A. make一般现在时的主动语态；B. made一般过去时的主动语态；C. are made一般现在时的被动语态；D. were made一般过去时的被动语态。主语与make之间是被动的关系，排除A,B；根据last year判断，句子的时态为一般过去时，故答案为D。