按要求改写句子。
1. She is my uncle's daughter. (对画线部分提问)
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2. I need four train tickets. (对画线部分提问)
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3. Does he need pyjamas? (作否定回答)
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4. I'm packing my suitcase. (对画线部分提问)
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1. Who is she?
2. What do you need?
3. No, he doesn't. (答案不唯一)
4. What are you doing?