I. Turn into passive voice
1. Mary types letters in the office. (be + PII)
Letters are typed in the office by Mary
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2. His father will help you tomorrow.
You will be...helped by his father tomorrow....
3. Science and technology have completely changed human life.
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4. Peter broke this bottle.
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5. They are learning English in the room.
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6. Nothing can change my mind.
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7. No one had told me about it.
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8. I don’t know her telephone number
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9. My students will bring the children home.
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10. They sent me a present last week.
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