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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单项选择题
Not until I shouted at the top of my voice ______ me.
A．did she look at
B．that she looked at
C．she didn't look at
D．had she looked at
单项选择题
If you want to speak English well, you must practice it ______.
A．repeatedly
B．repeatingly
C．repeating
D．repeated
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