问题 选择题

The floor is wet. Who’s going to ___________ ?

A.mop up it

B.mop up them

C.mop it up

D.mop them up

答案

答案: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。

选择题
单项选择题