单项选择题

But for their help, we ______.

A．shouldn't succeed
B．could not have succeeded
C．will not succeed
D．should not have succeeded

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单项选择题

I have made an ______ for you to see the doctor at eleven this morning.

A．appointment
B．arrangement
C．opportunity
D．assignment

单项选择题

It was not long ______ the rain stopped and the bright sun came out again.

A．that
B．ago
C．before
D．until

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