—Why can't you go with me to the National Museum?—I ___________ an essay all the

题干

—Why can't you go with me to the National Museum?
—I ___________ an essay all the morning and haven't finished yet.

A．write	B．had written
C．will write	D．have been writing

上一题下一题 0.4难度单项选择更新时间:2018-10-01 09:16:34

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