—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 |
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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 |