They built this house in 1995.
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Đáp án: This house was bulit in 1995.
He opened the boxes and took out a cigarette.
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We have learnt English for five years.
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You must answer all the questions on the paper.
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Do people speak English all over the world?
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Someone is singing an English song.
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Turn these following sentences into the passive voice.
I finished my work at about five o'clock.
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We use this book in our class.
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Somebody planted this tree last month.
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They gave him a nice present when he retired.
-> ________________________________________________________________.