10. If I (to meet) Brad Pitt, I (to ask) for his autograph. 11. If you (to check) the car, it (not/to break) down in the middle of the desert. 12. If it (not/to rain), the children (to play) outside. 13. If my parents (not/to be) so tired, they (to watch) the film on TV. 14. If it (to rain), the children (not/to go) for a walk. 15. If she (not/to read) the novel, she (not/to pass) the literature test. 16. If I (not/to argue) with my father, he (to lend) me his motorbike. 17. If we (to take) the bus, we (not/to arrive) in time. 18. If Dick (not/to buy) the book, his friends (to be) angry with him. 19. If Susan (to study) harder, she (to be) better at school. 20. If they (to have) enough money, they (to buy) a new car.

Это предложения с Second Conditional (второй тип условных предложений):
If + Past Simple, would + V1 (если бы…, то бы…).

10. If I met Brad Pitt, I would ask for his autograph.

11. If you checked the car, it would not break down in the middle of the desert.

12. If it did not rain, the children would play outside.

13. If my parents were not so tired, they would watch the film on TV.

14. If it rained, the children would not go for a walk.

15. If she did not read the novel, she would not pass the literature test.

16. If I did not argue with my father, he would lend me his motorbike.

17. If we took the bus, we would not arrive in time.

18. If Dick did not buy the book, his friends would be angry with him.

19. If Susan studied harder, she would be better at school.

20. If they had enough money, they would buy a new car.