There is a fire-hose reel( )the back staircaseThere is a fire-hose reel( )the back staircase.A、at B、on C、in D、for
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题目内容：
There is a fire-hose reel( )the back staircase
There is a fire-hose reel( )the back staircase.
A、at B、on C、in D、for
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