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 By the time I got home, Gina and her sister ______ their project already.

A.finished                               B.have finished

C.had finished                           D.will finish

 

【答案】

C

【解析】

試題分析:通過分析可知,吉娜和她的妹妹是在我到家之前就完成了她們的計劃。故應該用過去完成時。所以本題選C。

考點:本題考查時態。

點評:完成本題需要對過去完成時的用法熟練掌握。過去完成時表示過去時間之前發生的動作。通俗一點說就是“過去的過去”。如本題中的兩個動作get和finish,finish就在get之前,故finish就用過去完成時。

 

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