题目内容
一Andrew hit a pipe. and filled the room with water.
一Let's help him right away.
A. mopping it up B. mopping up it C. mop it up D. mop up it
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题目内容
一Andrew hit a pipe. and filled the room with water.
一Let's help him right away.
A. mopping it up B. mopping up it C. mop it up D. mop up it