单项选择题

What is the usage of the Pony Express

A．To help people travel from coast to coast.
B．To train ridem for competition.
C．To transfer materials and messages.
D．To arrest criminals in the West.

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I will be glad to get acquainted ________ the girl you introduced.

A．on
B．with
C．to
D．by

单项选择题

My brother has decided to become a policeman, ________ what may.

A．came
B．come
C．coming
D．having come