cứu mik với sos

1. If he didn't have to study for his exam, he could go out. 2. If she studied harder, she could pass the exam. 3. If he didn't smoke too much, he could get rid of his cough. 4. If I didn't feel tired, I could play football this afternoon. 5. If Olga and Ivan had paid 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 to the meeting, she wouldn't have been late. 8. If you promise to return back, I will lend you. 9. If the weather had been better, we wouldn't have put off our trip. 10. If Sally had been at school on Friday, she would know what she has to do for homework. 11. If you don't like this one, I'll bring you another. 12. But for his nervousness, Martin would have passed his driving test last week. 13. If he pays me tonight, I will have enough money to buy a car. 14. If you don't leave me alone, I'll call the police. 15. Should you arrive at the office earlier than I do, please turn on the air-conditioner. 16. Had he not died so young, he would be a famous musician by now. 17. Were you to take good care of the car, it wouldn't break down so often. 18. If you tell lies to your boss, you will be fired at once. 19. Had he revised all his lessons, he wouldn't have failed the exam. 20. If Rita had gotten some sleep last night, she wouldn't be exhausted today.