单项选择题

If（）in the fridge, the fruit can remain fresh for more than a week.

A．keeping
B．kept
C．be kept
D．to keep

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单项选择题
Only when in danger（）human beings.

A．will attack most snakes
B．will most snakes attack
C．snakes will most attack
D．most snakes will attack
单项选择题
He suggested（）somewhere for a short holiday.

A．us to go
B．our going
C．us going
D．we will go
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