Question

【题目】There is water everywhere. Who's going to ?
A.mop up it
B.mop up them
C.mop it up
D.mop them up

Answer 1

【答案】C
【解析】句意是：到处都是水，谁来把它拖干净？water是不可数名词，用it 代替，故先排除选项B和D。mop up中的up为副词，当宾语为人称代词时须放在中间，mop it up “把它拖干净”，故选C。