why not look up the word in a dictionary( )you don't know it

why not look up the word in a dictionary( )you don't know it lf you don't know how to look up a word in a dictionary,the Please look it up in the dictionary when you don't know the you can look up the word in the d___if you don 't know it If you don't know the word,you can look up the word in the d You'd better look up the new word in a dictionary(if)you don If you don't know how to spell a word,look it ___ in the dic if you don't know a word ,you can __ it __ in a dictionary . If you don't know the meaning of the word,you can look it up If you don't know how to spell a new word,look it up in a di if you don't know a new word,please look it up (查找）in a d___ I don`t know the word,i have to look it up in a[ ]填空我是初一学生