Viết lại các câu sau sao cho nghĩa không đổi

1 . My father waters this flower every morning.
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2 . John invite Fiona to his birthday party last night.
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3 . Her mother is preparing the dinner in the kitchen.
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4 . We should clean our teeth twice a day.
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5 . Our teachers have explained the English grammar . 
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Giúp với ạaaaaaa