There are many words in the English language(语言).You will ne

There are many words in the English language(语言).You will never __1__ the meaning of every word in English.When you read,you will often find many _2___ you don’t know.You will not have enough time to __3_ reading and try to find every new word in a dictionary.
Sometimes you can _4__ a new word because you know some of the parts of the new word.For example,if a word ends __5__ the letters “er”,that word __6___ be the name of a __7__ or a thing that does a certain action(动作).A writer is a person who writes.__8__ it is not __9__ to know the parts of a new word to understand it,__10__ it will help you many times.
1.A.know B.learn C.find D.look up
2.A.books B.letters C.stories D.words
3.A.stop B.enjoy C.keep D.start
4.A.find B.get C.study D.guess
5.A.in B.off C.up D.by
6.A.can B.might(可能) C.should D.have to
7.A.friend B.boy C.person D.girl
8.A.Then B.Now C.Often D.Sometimes
9.A.helpful B.useful C.enough D.good
10.A.but B.and C.so D.for