Viết lại câu sao nghĩa không đổi: The pupils will learn hard. They will pass the coming exams

1.    The pupils will learn hard. They will pass the coming exams
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2.    He doesn’t take any exercise; that’s why he is so unhealthy
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3.    I didn’t know your number so I didn’t ring
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4.    I have no ladder so I can’t get over the wall
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5.    My friends will have time. They will come to visit me
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6.    We haven’t got central heating, so the house is rather cold
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7.    We didn’t go by air because we didn’t have enough money
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8.    I am fat, that’s why I can’t get through the bathroom window
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9.    He wasn’t looking where he was going. That’s why he was run over.
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10.    The bus didn’t stop because you didn’t put your hand up
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