Ex. 1
1. is not written
2. are produced
3. are not held
4. is made
5. are sold
6. are brought
7. is held
8. are sent
ex. 2
1. was built
2. were killed
3. was not injured
4. were beaten
5. was heard
6. was stolen
7. were built
8. were not used
ex. 4
1. effects
2. plot
3. computer-animated
4. blockbuster
5. sound
6. cast