单项选择题

A man escaped from the prison last night. It was a long time （） the guards discovered what had happened.

A. before
B. until
C. since
D. when

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单项选择题
（） that my head had cleared, my brain was also beginning to work much better.

A. For
B. Now
C. Since
D. Despite
单项选择题
I’m not going to buy the book. （）. It’s too expensive.

A. I don’t either
B. Neither am I
C. So am I
D. I’m not, too
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