单项选择题

______ they change the coach they will lose the match.

A) Until
B) Before
C) Unless
D) Although
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There is no point ______ it again to him, for he never listens to our advice.
A) saying
B) to say
C) say
D) said
单项选择题
Please remember to keep in ______ with me through e-mail when you are abroad.
A) touch
B) trouble
C) promise
D) approval
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