Passive Woksheet Key

Here follows the key to the practice sheet I handed out in class the other day:

42.1.
2. is made   3. was damaged   4. were invited   5. ares hown   6. are held   7. was written... was translated   8. were overtaken   9. is surrounded

42.2.
2. When was television invented?
3. How are mountains formed?
4. When was Pluto discovered?
5. What is silver used for?

42.3.
3.covers   4. is covered   5. are locked   6. was posted... arrived   7. sank... was rescued   8. died... were brought up   9. grew up   10. was stolen   11. disappeared   12. did Sue resign   13. was Bill sacked   14. is owned   15. called...was injured... wasn't needed   16. were these photographs taken... Did you take   17. 'm not bothered / am not bothered

42.4.
2. All flights were cancelled because of fog.
3. This road isn't used much
4. I was accused of stealing money
5. How are languages learned/learnt?
6. We were warned not to go out alone