单项选择题

______the rain stops before 12 o'clock, we will have to cancel the game.

A．As
B．Since
C．While
D．Unless
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单项选择题
If you want to join the club, you'll have to______this form first.
A．put up
B．try out
C．fill in
D．set up
单项选择题
Before______for the job, you will be required to take a language test.
A．apply
B．applying
C．applied
D．to apply
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