单项选择题

Mary is always ready to help others when they are in trouble and she never ______ their requests.

A. turns up
B. turns over
C. turns in
D. turns down
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单项选择题
With the development of the Internet, people’s life ______ in the past few years.
A. is improved

B. has been improved
C. is improving

D. had been improved
单项选择题
A. He was asked to hand in his paper. B. He didn’t hand in his paper on time. C. He handed in his paper earlier. D. The teacher liked his paper very much.
A. He was asked to hand in his paper. B. He didn’t hand in his paper on time.
C. He handed in his paper earlier. D. The teacher liked his paper very much.
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