Some problems with grammar

I do not know what I should start with. If there is somebody who has some knowledge connected with this topic I would like this person to share it with me or to send some links where I can find information I am interested in.

Give an account of the subordinate clauses in the sentences below. Underline the subordinate clause and name the type of the clause as well as its function in the sentence.

1. We told him that he should apologize.

2. The idea that she presented is interesting.

3. Who told you that is a liar.

4. He stood by the window watching birds.

5. His job selling computers is well-paid.

6. She gave us a list of problems to be discussed.

7. He was happy seeing her again.

8. It is true that they had dinner with their boss.

9. I have to leave soon to catch the last bus.

10. To put it short, she is wrong.

11. The idea that we should go there is crazy.

12. Our plan is to go to Italy.

13. We found it exciting to see the game.

14. When late, use the back door.

15. Kick him was all I did.

16. It was a book that John gave her.

17. He gave whoever was there a flower.

18. He served a lot of drinks, which we liked.

19. That we did it was a mistake.

20. She asked him if he could help her.