按要求写句子。
【小题1】I read a book.(改为现在进行时)
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【小题2】He is watching TV.(对画线部分提问)
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【小题3】She is singing a song.(用They替换She)
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【小题4】I am looking at the picture.(改为一般疑问句)
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【小题5】Is she looking at the bird?(作否定回答)
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