题目内容
The students are busy ________ for the examination.
[ ]
A.prepare
B.preparing
C.to prepare
D.to be prepared
答案:B
提示:
提示:
|
be busy doing……意为“忙于做……”。 |
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题目内容
The students are busy ________ for the examination.
A.prepare
B.preparing
C.to prepare
D.to be prepared
|
be busy doing……意为“忙于做……”。 |