根据首字母提示，补写下列单词，使句意完整。

1. We should protect e            animals.

2.1 want to eat something because I am k            of hungry.

3. How do you feel a            pollution?

4. The cake t            delicious. Would you pass me one more?

5. Many advertisements are aimed specifically a            teenagers, so you have to be careful.

6. I need a warm sweater to keep o            cold.

7. Your apology is a           by me. I’ll forgive you.

8. You can send flowers a          of time for Mother's Day.

9. It’s very important to choose a p            time to visit friends.

10. The map m            me, so I went the wrong way.