问题

ould have avoided thatterrible car accident, but he ________ careful enough

A:as soon as
B:unless
C:as far as
D:until

正确答案是：

同类题型

I have two elder brothers, ____ in the army for ten years.

is the pair of gloves _____ mine—Yes．You have to wear another pair．

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___he hasn’t come is_______ he is busy writing his novel