10. If he polishes his shoes, he looks smart.
11. If he parks near his office, he comes by car​.
12. If my house was guarded by two big dogs,it'd be broken into every night.
13. If the fltas are clearly numbered, it isn't very difficult to find anyone​.
14. If I know her e-mail address, t can tell you​.
15. If  she doesn't word in the evening, she has time to phay with her children​.
16. They'd be upset if i told them what happen.
17. If i was tall enough,I would join the basketball team.
18. If he saw the signal ,he'd stop his car.
19. If Peter prepared his lesson well,he wouldn't get bad marks.
20. If Mary had enough money,she'd buy a new car.
21. If you don't go right now,you'll be late for a train.
22. If he had enough qualifications,he'd apply for a job.
23. If we don't hurry,we'll be late for a exam.
24. If you often talked to them,they'd understand you.
25. If you spoke English naturally,they'd understand you.