单项选择题

I'm not leaving ______ I get an apology from you.

A．so that
B．as long as
C．while
D．until
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单项选择题
I don't mind ______ museums if they're really interesting
A．to visit
B．visiting
C．visit
D．visited
单项选择题
______ it was raining very hard, we would like to have gone to the park.
A．If
B．Whether
C．Even though
D．As though
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