根据要求改写句子

76. She does her homework at home every day.（改为否定句）

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77．There are five books on the desk．(划线提问)

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78. I have some stickers in my locker. (改为一般疑问句）

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79. Simon takes a bus to school every day.（改为同义句）

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80．The trousers are John’s．(划线提问)

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