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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