单项选择题

Though they may not succeed,（）they will still try.

A. but
B. yet
C. that
D. and

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单项选择题

A. To play a joke.
B. To beat the thief.
C. To find out the thief.

单项选择题

A. Over 15,000.
B. About 500.
C. About 1,500.