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—I wonder if you could go with me to the supermarket.
—Sorry. I _______ my experiment report all the morning and haven’t finished yet.
A.write   B.was writing
C.have written D.have been writing
D

试题分析:考查时态。本意的关键词是all the morning整个早晨,该时间状语常常与现在完成进行时连用。句意:—我想知道你是否和我一起去超市.—对不起。整个上午我都在写实验报告,我还没有写完。根据句意说明草早上开始到现在一直都在写实验报告。故使用现在完成进行时表示过去发生的倒装一直持续到现在。故D正确。
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