单项选择题

Mary did nothing but______the whole time she was there．

A．complain
B．to complain
C．complaining
D．complained
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单项选择题
Alice is fond of light music, ______her brother is keen on rock and roll．
A．when
B．as
C．for
D．while
单项选择题
______today, he would arrive in Washington by next Wednesday．
A．If he leaves
B．Were he to leave
C．Would he leave
D．Was he leaving
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