Помогите пожалуйста с английским 4 и 5 задание!!!

Task 4
1. Mary would arrive....
2. If I were you I would buy...
3. If people helped one another the world would be better.
4.If I had time I would read more.
5. Tom wouldn't play....
Task 5
1.........,he would have bought.
2. If they had gotten....
3. If Tom had done....
4...............,I would have seen.
5. ..............,they wouldn't have shouted at me.