单项选择题

Don't have the water ______ all the time while you are out.

A．running
B．run
C．runned
D．runs
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单项选择题
______ enough preparations, we decided to put off the meeting.
A．Having not make
B．Not having made
C．Not made
D．Making not
单项选择题
It is necessary to find a peaceful ______ to the troubles in the area.
A．solution
B．answer
C．way
D．explanation
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