I don't like this kind of cell phone. Will you show me ?
—It is useful book.—Yes, it tells us how to play football.
Although he is only a _____ boy. He knows a lot.
To help the sick people in the hospital is _____ for me .
-He didn’t go to the concert yesterday, did he?-______.He was busy studying for the tests all day.
My hometown ______ a lot in the past ten years.