单项选择题

As the price of oil keeps______, people have to pay more for driving a car.

A．to go up
B．going up
C．gone up
D．go up
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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
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
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