语法填空。

     People 1_____ (live) in different countries made different kinds of words. Today there are about fifteen

hundred 2_____ in the world. Each contains many thousands of words. A very large dictionary, for example,

contains four 3_____ five hundred thousand words. But we do not need 4_____ these. To read short stories

you need to know only about two thousand words. 5_____ you leave school, you will learn only one thousand

or more.

     The words you know are called your vocabulary. You should try to make your vocabulary 6_____ (big).

Read as many books as we can. There are a lot of books 7_____ (write) in easy English. You will enjoy them.

When you meet 8_____ new word, look it 9_____ in your dictionary. Your dictionary is your 10_____ (much)

useful book.