单项选择题

At first everything went well with the project but recently we have had a number of（）with the machinery.

A. disturbances
B. setbacks
C. outputs
D. distortions

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单项选择题
One of the reasons for his popularity in our village is that he （） almost everyone every time when he comes back from the big city.

A. looks after
B. cares for
C. asks after
D. runs for
单项选择题
The population will be increasing very fast unless they（） with new methods to deal with it.

A. come to
B. come away
C. come over
D. come up
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