1. 根据句意及首字母提示，补全单词

1. （1） Don't throw out r everywhere. We should keep the environment clean.

3. （2） I b two books from the school library yesterday.

5. （3） I think every family member should s the housework to have a clean and comfortable home.

7. （4） The room is too dirty. Can you help me sweep the f?

9. （5） — Would you like some coffee or milk?

   — N. I just want a glass of water.