I’m not sure about the meaning of the word. You’d better look it up in a A. letterB. dic

问题补充：

I’m not sure about the meaning of the word. You’d better look it up in a ．

A. letter

B. dictionary

C. postcard

D. notice

答案：

A. letter

(答案→)B. dictionary

C. postcard

D. notice

解析：不确定单词的意思，最好应该在字典中查询，dictionary表示字典的意思，故本题选B。