单项选择题

There was a knock at the door. It was the second time It ______ hat evening.

A. interrupted
B. was interrupting
C. had interrupted
D. had been interrupted
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The poor ______ getting poorer, the rich richer.
A. are
B. is
C. has
D. have
单项选择题
He takes no interest in studies: ______, he plays tennis all day.
A. in short
B. instead
C. anyhow
D. still
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