单项选择题

John's completely unaware how much damage he did the company, （）

A. didn't he
B. did he
C. isn't he
D. is he

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单项选择题
She hardly ever goes to（） the theater.

A. neither
B. neither the cinema nor
C. either the cinema
D. the cinema or
单项选择题
（）a binding contract last year and it is still valid.

A. We have signed
B. We haven't signed
C. We signed
D. We had signed
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