3. 主语是 My brother，第三人称单数，　因此动词应该用 plays.

5. Yes, I am.

解析：

4. She watches TV at home.

3. My brother plays soccer three or four times a week.

2. I go to the movies once a year.

1. I usually climb the hill on weekends.

5. Are you healthy? (yes)

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Keys:

4. What does your mother do at home? 　 ( watch TV)

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3. How often does your brother play soccer? ( three or four times a week)

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2. How often do you go to the movies?　 ( once a year)

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