you'd better a dictionary when you don't know a word a releve b refer c consult d discuss

you'd better a dictionary when you don't know a word a releve b refer c consult d discuss

C
look up sth.in the dictionary/ consult the dictionary：查字典

你最好查一下英语辞典当你不知道某一个单词的时候

什么东西？ 句子太不全啦