单项选择题

The researchers have just completed a study of driving situations.

A. started
B. finished
C. changed
D. made
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单项选择题
He has trouble understanding that other people judge him by his social skills and conduct.
A. style
B. behavior
C. mode
D. attitude
单项选择题
In order to survive man needs to consume food and water.
A. work
B. play
C. live
D. walk
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