单项选择题

It is certain that he will do all he can ______ us.

A． help
B． helping
C． to help
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单项选择题
I'll help you repair the machine as soon as I ______ my work.
A． will finish
B． finish
C． have finished
单项选择题
Could you ______ me a hand when we are in trouble
A． borrow
B． lend
C． take
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