单项选择题

_____ his work, he would do it till it was finished.

A．Once Charles would start
B．Once Charles started
C．Since Charles would start
D．Since Charles started
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单项选择题
It took me a year to be _____ to the college life.
A．adapted
B．adopted
C．received
D．accepted
单项选择题
_____ enough time to study, I would have been able to enter university.
A．Have I
B．I have
C．Had I
D．I had
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