单项选择题

Bill will use my office ______ I come back from Australia.

[A] when
B. until
C. as
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单项选择题
I’ve been waiting for him for ______ hour and ______ half.
A. a.../
B. an... a
C. an.../
单项选择题
What do they want to do
[A]Have a basketball match.
B.Have a football match.
C.Have a volleyball match.
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