单项选择题

Sports and games can be ______ great help to us.

A．of
B．at
C．on
D．in
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单项选择题
I think Father would like to know ______ I've been up to so far, so I decide to send him a quick note.
A．which
B．why
C．what
D．how
单项选择题
How can he ______ without money for food during the journey
A．get together
B．get along
C．get back
D．get down
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