单项选择题

______ for your help, we' d never have been able to get over the difficulties.

A．Had it not
B．If it were not
C．Had it not been
D．If we had not been
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单项选择题
All the communists ______ the people instead of being served by the people.
A．are supposed to serve
B．are opposed to serving
C．are subjected to serving
D．object to serving
单项选择题
______ you as soon as I know what.
A．I'll phone, does happen
B．I'll phone, has happened
C．I am phoning ,happens
D．I am going to phone... happens
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