题目内容
The floor is wet. Who’s going to ___________ ?
A.mop up it | B.mop up them | C.mop it up | D.mop them up |
C
本题前句主语是单数,故后句用it来代替,mop和up搭配,代词必须位于两者之间,故本题选C。
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题目内容
A.mop up it | B.mop up them | C.mop it up | D.mop them up |