be busy doing 忙于做某事
是个固定搭配 本题考点
Have the students been busy------ a fashion show these days?
Have the students been busy------ a fashion show these days?
A.ORGANIZEING
B.TO ORGANIZE
为什么不选B呢?
A.ORGANIZEING
B.TO ORGANIZE
为什么不选B呢?
英语人气:556 ℃时间:2019-12-19 23:23:33
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