Shirley ______ a book about China last year but I don’t know whether she has finished it.

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问题 Shirley ______ a book about China last year but I don’t know whether she has finished it.

选项 A、has written
B、wrote
C、had written
D、was writing

答案D

解析 此题如果只看but以前的部分,那么B和D都对,但是由于下文给我们提供了一个语言环境I don’t know whether she has finished it (or not),所以只能选D。B项过去时是表示过去的动作,对现在无任何影响。
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