2)
1. annoyed, annoying
2. Embarrassed, embarrassing
3. Disappointed
4. Exausted
5. Excited , exciting
6. Interested, interesting
3)
1. My granddad used to enjoy reading
2. Her face used to look pale
3. My grandparents didn't used to have computers
4. He used to took part in the competition
5. I used to knew many italian poems
4)
1. Isn't
2.don't
3.isn't
4.don't
5.doesn't
6.doesn't
7.doesn't
8.don't
9. Doesn't
10. doesn't