根据句意及首字母或汉语提示完成句子。

1. In China, people usually s_____ hands when they meet for the first time.

2. The students are s_____ to wear their uniforms at school, aren't they?

3. You had better not k_____ the baby's mouth because she is ill.

4. —W_____ spoon is this?

    —It's Li Lei's.

5. —May I use the k_____ to cut the apple?    

    —Yes, please.

6. —Could you please eat some delicious food again?    

    —No, I am f_____ now.

7. Sometimes we can use some punctuation (标点) m_____ to express our emotions.

8. We should often _____ (实验)with our own ideas, so that we can improve our skills.

9. It's very important to use e-mail at the _____ (合适的) time.

10. I'm _____ (逐渐地) getting used to things.