仿照例句，将下列句子改为否定句和一般疑问句，并作肯定和否定回答。
例: I went to the park with my parents last Sunday.
I didn't go to the park with my parents last Sunday.
Did you go to the park with your parents last Sunday?
Yes, I did. No, I didn't.
1. They did housework just now.
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2. I grew flowers last month.
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3. Tom rode horses the day before yesterday.
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1. They didn't do housework just now.
Did they do housework just now?
Yes, they did. No, they didn't.
2. I didn't grow flowers last month.
Did you grow flowers last month?
Yes, I did. No, I didn't.
3. Tom didn't ride horses the day before yesterday.
Did Tom ride horses the day before yesterday?
Yes, he did. No, he didn't.