单项选择题

If Tim keeps working hard like this, he'll()sooner or later.

A．break down
B．give up
C．get down
D．hold on

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单项选择题

Wilma became the first American woman to win three Olympic gold medals in track, ()made her mother very proud.

A．it
B．that
C．which
D．this

单项选择题

In the West, people make()a rule to send Christmas present to their relatives and friends.

A．this
B．that
C．it
D．the following

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