单项选择题

People try to avoid public transportation delays by using their own cars, and this （）creates more problems.

A. after all
B. once again
C. in case
D. in turn

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The young dancers looked so charming in their beautiful clothes that we took ______ pictures of them.
A. many of
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Teachers are not happy when they find in class their students sending （）to their friends by mobile phone.

A. letters
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C. notes
D. informations
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