7．---Has Li Lei finished his work today？
---I have no idea，but he ______ it when I saw him this morning．（　�。�
A．had doneB．would doC．was doingD．did

分析 ---李磊已經(jīng)做完今天的工作了嗎？
---我不知道，但是今天上午我看到他時，他正在做著．

解答 答案：C．根據(jù)when I saw him this morning可知今天上午我看到他時，他正在做著，所以用過去進行時，答案是C．其他選項表示的時態(tài)分別是A過去完成時；C過去將來時；D一般去時．

點評 考查過去進行時．語境是時態(tài)選擇的關(guān)鍵，只有了解句子所表達的意思，才能選擇到正確的答案．

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