=>
1/
2. has decided
3. was visited
4. have not found
5. are discovered
6. is chosen
7. will be held
2/
2. has been found
3. are planted
4. will be sold
5. were taken
6. has been discovered
3/
2. My sandwich has been eaten by a dog.
3. The letter will be delivered tomorrow.
4. Our train has been cancelled.
5. A window in the classroom was broken by one of the student.
6. Millions of bars of chocolate are eaten every day.
