The students here ______ all kinds of exercises every day in the past four days.
The students here ______ all kinds of exercises every day in the past four days.
A.have been kept busy doing B.have kept busy doing
C.kept busy doing D.keep on doing
不明白怎么会是被动
A.have been kept busy doing B.have kept busy doing
C.kept busy doing D.keep on doing
不明白怎么会是被动
英语人气：497 ℃时间：2020-04-04 16:05:56
优质解答
学生是由老师来安排做练习的,要根据语境来说
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