Excuse me Mr Li I don’t know the meaning of the whole sentence. What shall I do?You shou

问题补充：

Excuse me, Mr Li, I don’t know the meaning of the whole sentence. What shall I do?

You should .

A. look it for

B. look it up

C. look for it

D. look up it

答案：

A. look it for

(答案→)B. look it up

C. look for it

D. look up it

解析：句意：打扰一下，我不知道整个句子的意思。我该怎么办？你应该查查。look for,寻找。look up查找，代词放中间。故选B。