I. Change these sentences to the passive voice : 1. My students have met their friend at the station. ……………………………………………… 2. They didn’t allow Tom to take these books home. ……………………………………………… 3. The teacher won’t correct exercises tomorrow. ………………………………………………… 4. How many trees did they cut down ? …………………………………………………………… 5. This well-known library attracts many people. ………………………………………………… 6. All students attended the meeting. ……………………………………………………………… 7. Mary has operated Tom since 10 o’clock. ……………………………………………………… 8. Mr. Smith has taught us French for 2 years. …………………………………………………… 9. They didn’t look after the children properly. …………………………………………………… 10. Nobody swept this street last week. ……………………………………………………………