13. If someone let you out, you can go out early.

14. If i knew Greek, i could tell you about that

15.If peter studied hard, he could get good marks.

16. If my friends were here now, they could help me.

17. If mr. Lee didn't speak too fast, we could understand him.

18. If i knew the answer, i would tell you

19. If he had been here, he would have had the chance to see it

20. If the weather weren't bad, we could play foodball

21. If it hadn't rained heavily, the match would have been as exciting as we expected

22. If it didn't rain heavily, we could go out

23. If they studied the lesson carefully, the could get good marks

24. If i had read that novel, i would have had time

25. If you had taken the trip last week, you would have seen the beautiful sights

26. if you had asked Alice, she woud have told you the truth. 

          Bài nhiều quá, có gì mình làm lộn, bạn nói mình, mình sửa cho

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13. If everyone let you out, you could go out early.
14. If I knew Greek, I could tell you about that.
15. If Peter studied hard, he could get good marks.
16. If my friends were here now, they could help me.
17. If Mr.Lee didn't speak too fast, we could understand him.
18. If I knew the answer, I would tell you.
19. If he had been here, he would have had the chance to see it.
20. If the weather weren't bad, we could play football.
21. If it hadn't rained heavily, the match would have been as exciting as we expected.
22. If it weren't raining heavily now, we could go out.
23. If they studied the lesson carefully, they could get good marks.
24. If I had had time, I would have read that novel.
25. If you had taken the trip last week, you would have seen the beautiful sights.
26. If you had asked Alice, she would tell you the truth.