按要求完成下列各题:
1.This is a book.(变为否定句)
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2.He is a good boy.(变为一般疑问句)
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3.She is in the room .(用where提问)
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4.I am a Chinese girl.(用she改写)
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5.the,pen,is,a,there,on,desk,.(连词成句)
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