A）. 用所给词的正确形式填空。(共20分，每小题2分)
1. My friends live on the _____________ (two) floor.
2. The boy often (go) to the library to read stories.
3. There is a young man ___________ (run) on the playground.
4. There _________ (be) lots of money in the bank.
5. Look! He is ___（put）on his shoes, he wants to play sports.