题目内容
—I wonder if you could go with me to the supermarket.
—Don't disturb me. I _____________my experiment report all the morning and haven't finished yet.
—Don't disturb me. I _____________my experiment report all the morning and haven't finished yet.
[ ]
A. write
B. was writing
C. have written
D. have been writting
B. was writing
C. have written
D. have been writting
D
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