Change these sentences into the passive voice

I. Change these sentences into the passive voice.

1. The milkman brings bottles of milk to houses.

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2. How do people learn languages?

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3. John will collect me at the airport.

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4. The manager must sign the cheque.

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5. They kept me waiting for half an hour.

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6. They are building a new ring road round the city.

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7. We can‘t wear jeans at work.

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8. Will you invite her to your birthday party’?

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9. They have built a new hospital near the airport.

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10. Do they speak French and English in Canada?

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11. Columbus discovered America.

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12. The police caught the thieft.

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13. They didn’t look after the children properly.

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14. They have changed the date of the meeting.

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15. Tam broke the glass.

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16. Nga left my handbag on the bus this morning.

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17. People speak English everywhere.

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18. Did her friends give her a lot of special presents on her birthday?

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19. Last night we saw a lot of ﬁlm.

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20. They built the house in 2000.

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