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.
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