阅读下面短文，用文中括号内所给动词填空。

     Since 1946, one of the most important inventions has been the computer. It has been changing all our

lives.

     The first computer   _1   _ (build) in 1946.It    2     (be) as large as a room and quite difficult and slow     3     ( use). But since the invention of silicon " chip " (硅片) ,  computers      4     ( become)  smaller,  easier and faster to operate. Some computers are as small as TV sets. Some can even      5     (make)

smaller than a book. And computers      6    ( get) smaller and smaller all the time. Who knows what the

computers of tomorrow     7    (be) like?

     There      8     (be)  several reasons why the computer is useful to us. First,  a lot of information can be put into computers. Second, the computer _   9     (work) very quickly thousands of times faster than a

man and it will not be tired. Third, modern computers can be built into other kinds of machines, like radios, cars and planes. So today people can spend less time     10    ( do) more work with a computer.

1.______ 2. _______3. _______4. _______ 5. ______

6. ______7. _______8. _______9. _______10. ______