-2023- 09/12

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Mary had finished her
单选题 Mary had finished her homework()the time I got home.

A.until

B.at

C.by

D.when

正确答案: C

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答案解析: by the time+从句,是过去完成时态常用的时间状语。这时,主句用过去完成时,从句用一般过去时。译为:当……时候,……已经……。我到家时,玛丽已经做完作业了。



相关知识:第二章、语法与词汇 

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