单项选择题

The driver began to speed up to ______ for the hour he' d lost in the traffic jam.

A．keep up
B．take up
C．catch up
D．make up

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单项选择题

The best title of this passage is ______ .

A．problems Facing East African Tourists
B．African Wild Animals Becoming More Dangerous
C．the Increasing Popularity of Game Reserves
D．some Problems of East African Game Reserves

单项选择题

A．Yes, I am Mr. Smith.B．No, he is not in the office right now.C．Speaking!D．He is not here. Can I speak for him

A．Yes, I am Mr. Smith.
B．No, he is not in the office right now.
C．Speaking!
D．He is not here. Can I speak for him