I/
1. They were very sorry to stay at home
2. We were disappointed that you couldn't attend the meeting
3. He was disappointed that she failed her exam
4. I was worried that you wouldn't come back
5. They are lucky to pass all the exams
6. We were sorry to hear about your father's illness
7. I was worried that they wouldn't come back
8. I am sure that he will win the game
9. I'm afraid that she can't come
10. I am ashamed that nothing better to offer you
II/
1. presentation 2. natural
3. dangerous 4. fertilizer
5. recycling 6. used
7. wooden 8. protector
III/
1. is made 2. are caused
3. are employed 4. are showed
5. are covered 6. is surrounded
7. are usually held 8. is ... pronounced
9. are made 10. am taken
