单项选择题

I'll tell you the secret, but ______ you don't tell anyone else about it.

A．only if
B．if only
C．even if
D．if not
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单项选择题
Not knowing what to do next, ______ his tutor for advice.
A．will he go to
B．he is going to
C．did he go to
D．he went to
单项选择题
______ adequate preparations, we might have succeeded.
A．Would we make
B．Had we made
C．If we are to make
D．If we were making
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