You should understand the traffic rule by now.You’ve had it often enough.A. explainingB.

发布时间：2020-08-17 10:09:22

You should understand the traffic rule by now.You’ve had it      often enough.
A. explaining
B. to explain
C. explain
D. explained

网友回答

A. explaining
B. to explain
C. explain
(答案→)D. explained
解析：
此题考查“have sth.done”结构。
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