Although they had signed the peace treaty, they were______preparing for a renewed offensive.

admin2019-03-01  28

问题 Although they had signed the peace treaty, they were______preparing for a renewed offensive.

选项 A、occupied
B、busy
C、engaged
D、involved

答案B

解析 be busy(in)doing忙于做…,可省略介词in;be occupied in doing,be engaged in doing,be involved in doing均不可省略介词in。
转载请注明原文地址:https://kaotiyun.com/show/1CNK777K
0

随机试题
最新回复(0)