单选题
2.
The gray building is where the workers live, and the white one is where the spare parts______.
A、
are producing
B、
are produced
C、
produced
D、
being produced
【正确答案】
B
【答案解析】
where引出一个主语为spare parts的表语从句,谓语动词produce同主语的关系应该是被动关系,故选B。
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