单项选择题

Diffcult as the task was, he ______ it in time.

A．worked
B．did
C．worked on
D．finished
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单项选择题
When I was your age, I dared to go out alone at night, ______ I
A．dare
B．didn't
C．did
D．dared
单项选择题
I will go home for a holiday as soon as I ______ my exam.
A．am finished
B．had finished
C．finished
D．finish
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