=>
I/
1. is destroyed
2. was discovered
II/
A/
1. Her pens and pencils are put in the second drawer.
2. The reports are studied very carefully.
3. Many letters are written by her everyday.
4. The reports are given to Mr.Wilson by Kim everyday.
B/
5. The sound of music was heard by us.
6. Ten men were arrested by the police.
7. That letter wasn't sent by her yesterday.
8. America was discovered by Columbus in 1492.