1. They               (建造) many buildings last year.
2. I remember all the new words. I have a very good m_______.
3. There's a box of                (火柴) on the table.
4. It is d________ to play with fire.
5. How many ________ (钢琴) are there in your school?
6. I was very happy because I h              from my best friend.
7. He is interested in g             . (地理学)
8. The old man _________(刷) his dog's fur every day.
9. Listen! There is someone _________ (敲) at the door.
10. A fox (狐狸) can't h_________ its tail.