题目内容
If you don’t know the words, you must ______in a dictionary.
A. look it up B. look up it
C. look them up D. look up them
练习册系列答案
相关题目
题目内容
If you don’t know the words, you must ______in a dictionary.
A. look it up B. look up it
C. look them up D. look up them