—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
网友回答
A. write
B. was writing
C. have written
(答案→)D. have been writing
解析：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。