здесь только перевести в past perfect либо past simple. Только те предложения, которые обведены кружочком.

1. Who told I hadn't been on the lesson?
2. We don't know what he answered.
3. When I met Tanya she was eating a pizza.
5. Tomorrow about 7 o'clock we will held him.
6. Do you know what kind of car he bought?
8. When I came home my children had eaten.
9. Kate gave me the book which she had promised to give me.
12. I thought I had lost my key.
17. What was she talking about when I called?
19. He thought we had quarreled.
21. He hadn't eaten yet and me too.
22. I lived in Riga.