4. I can't play football this afternoon because I felt tired. If .......... 5. Olga and Ivan weren't paying attention, so they didn't see the sign marking thei

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4. If I hadn't felt tired, I could play football this afternoon.

5. If Olga and Ivan had been paying attention, they would have seen the sign marking their exit from the highway

6. If she had a college degree, she could be employed

7. If she hadn't walked lớn the meeting, she wouldn't have been late

8. If you don't promise lớn return back, I won't lend you

9. If the weather hadn't been terrible, we wouldn't have put off our trip

10. If Sally hadn't been absent from school on Friday, she would know what she has lớn tự for homework

11. Unless you lượt thích this one, I'll bring you another

12. But for Martin's nerve, he wouldn't have failed the driving test last week

13. If he pays má tonight, I will have enough money lớn buy a car

14. If you don't leave má alone, I'll Gọi the police

15. Should you arrive at the office earlier kêu ca I tự, please turn on the air-conditioner

16. Had it not been for his early death, he would be a famous musician by now

17. Were I in your shoes, I would take good care of it

18. If you tell lies for your quấn, you'll be fired at once

19. If he had revised all his lessons, he wouldn't have failed the exam