将下列各句变成否定句和一般疑问句并作简短的肯定、否定回答。
1. She does her homework every day.
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2. He can make some cakes
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3. There are a lot of people in the room.
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4. I think they are from the USA.
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5. Kevin is reading an English book now.
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6. They have red pens and blue pencils.
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