单项选择题

We should keep ______ exercises all the time.

A．
[A] take

B．
[B] to take

C．
[C] taking

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单项选择题
______ Mary and Jane play well.
A．
[A] Both

B．
[B] Either

C．
[C] Neither
单项选择题
I want to drink ______ water, but there isn't ______ left in the bottle.
A．
[A] some; any

B．
[B] any; some

C．
[C] some; some
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