Question

【题目】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

Answer 1

【答案】C

【解析】

试题分析：句意：如果你不知道这些单词，你必须在字典中查找。look up,动词加副词构成的动词短语，加代词做宾语，要放中间。根据句意，可知指代上句中的名词复数words,故用代词them.故选C。