按要求改写句子。
[[QOrDeR]]What are you doing now?
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【小题2】The bell rings.(变为否定句)
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【小题3】I am having an ice cream. (变为一般疑问句)
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【小题4】I’m going to have breakfastat seven o’clock.(对划线部分提问)
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【小题5】It’sthirteen dollars.(对划线部分提问)
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