根据所给词的适当形式填空。

1. Zhou Jielun is his favorite _____ (sing).

2. My parents give a pair of _____ (train) to me as my birthday present.

3. People in China have different _____ (habit) from people in the USA.

4. We usually help the old grandma _____ (do) housework.

5. Let's _____ (give) him a computer game.