单项选择题

_______the population is too large, the government has to take measures to control the birth rate.

A．Although
B．Since
C．If
D．Until
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单项选择题
Mary says this is the _________ decision she has ever made in her career life.
A．bad
B．worst
C．worse
D．badly
单项选择题
You can drive your own car_______ you have passed the driving test.
A．even if
B．as if
C．now that
D．so that
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