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17. 一Has James finished his report on his enquiry learning yet?

―I'm not sure. He    on it last week.

A. was working      B. has worked

C. worked        D. had worked

17.   A考查動詞的時態(tài)。句意："詹姆斯完成了他有關調查學習的報告了嗎？""我不確定，上周他一直在從事這個工作。" 此處表示的是過去一周一直在做的事情，故用過去進行時。故選A。

題目來源：2015全品語法快練高中英語新課標 > 訓練29動詞變化類綜合訓練

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