题目内容

【题目】After days of discussion, his plan to be the best one.

A. was to prove

B. proved

C. was proved

D. was proving

【答案】B

【解析】句意:通过几天的讨论,他的计划被证明是最好的。Prove(结果是,证明是)用主动语态表被动,故选B

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