根据所给英文写出单词的合适形式。 1. Lily is a good &

根据所给英文写出单词的合适形式。

1. Lily is a good (swim) because she is the first in the swimming match.
2. We usually brush our teeth (two) a day .
3. I have a little dog . (it) nose is white.
4. How long do you spend (chat) with your e-friends on the Internet every day?
5. Fruit and vegetables are (health) food.