Turn these following sentences into the passive voice.

We have learnt English for five years.

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Turn these following sentences into the passive voice.

They gave him a nice present when he retired.

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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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Turn these following sentences into the passive voice.

They built this house in 1995.

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Turn these following sentences into the passive voice.

We use this book in our class.

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Turn these following sentences into the passive voice.

You must answer all the questions on the paper.

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Turn these following sentences into the passive voice.

Do people speak English all over the world?

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