We__________three quarters of the book by the end of next semester.A．have been l

题干

We__________three quarters of the book by the end of next semester.

A．have been learning	B．will have learnt
C．had learnt	D．would have learned

上一题下一题 0.94难度单项选择更新时间:2018-09-26 11:47:00

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