单项选择题

No matter who he is, young or old, people’s state of mind tends to keep（）with the rapid change of society.

A. contact
B. progress
C. touch
D. pace

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单项选择题
What does the man want to do（）

A. Make a call.
B. Have a rest.
C. Buy a book.
D. Look for something.
单项选择题
To tell you the truth, it’s very hard for us to help them get rid of Internet addiction. But we（）on this problem trying to improve the situation.

A. worked
B. had worked
C. are working
D. had been working
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