题目内容
8、Did you knock on the door?
----No. There was no light on. There somebody at home.
A. shouldn't have been B. mustn't have been
C. couldn't have been D. couldn't be
试题答案
8、C
相关题目
Did you knock on the door?
----No. There was no light on. There somebody at home.
A. shouldn't have been B. mustn't have been
C. couldn't have been D. couldn't be
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