If the whole framework of the thesis ______ beforehand, a great deal of time and

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问题 If the whole framework of the thesis ______ beforehand, a great deal of time and energy would have beeh saved.

选项 A、was designed
B、had been designed
C、were designed
D、has been designed

答案 B

解析虚拟语气题。考查虚拟条件句的时态问题。本句是表示与过去事实相反的虚拟语气，主句用 would have+过去分词，根据对应原则，从句应该用过去完成时。

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Withallthedataheneeded______,Peterbegantowritehisthesis.A、collecting