根据句意及首字母提示填写单词，使句子意思完整。

1.—Does the food t________ delicious?

   —Yes. I like it very much.

2. Our English teacher is very s________ with us. He always keeps us standing when we

    can't finish our homework.

3. Don't make so much n________.The baby is asleep.

4. Cycling can help us save energy and it can also a________ air pollution.

5. On New Year's Day,I often r________ postcards from my friends and my classmates.