题目内容
The accident was supposed______due to careless driving.
A.to happen B.to have happened
C.happening D.having happened
B
表示过去的动作用动词不定式完成式。
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题目内容
The accident was supposed______due to careless driving.
A.to happen B.to have happened
C.happening D.having happened
B
表示过去的动作用动词不定式完成式。