17. If you work so much, you’ll be tired
18. If people do enough exercise, there won’t be a lot of heart disease 
19. Unless you water these plants, they will die
20. If I were rich, I would buy that house
21. If he didn’t work in the evening, he would have time to play with his children
22. If I had a motorbike, I could give you a ride
23. If we don’t hurry up, we will be late for the concert 
24. Unless she lives very far from school, she won’t go to school late
25. If the test weren’t so difficult, we could finish it on time
26. If he didn’t tell lies, people would trust him
27. If she weren’t so busy, she could come to the party
28. If I had money, I would go on holiday
29. If he weren’t lazy, he wouldn’t often get bad marks
30. If you don’t do it now, you will not finish it on time 

If S V(HTD), S will/can/may Vnt

If S V(QKD), S would/could/might Vnt

17 If you work so much, you’ll be tired
18If people do enough exercise, there won’t be a lot of heart disease 
19 Unless you water these plants, they will die
20If I were rich, I would buy that house
21If he didn’t work in the evening, he would have time to play with his children
22 If I had a motorbike, I could give you a ride
23If we don’t hurry up, we will be late for the concert 
24Unless she lives very far from school, she won’t go to school late
25 If the test weren’t so difficult, we could finish it on time
26If he didn’t tell lies, people would trust him
27If she weren’t so busy, she could come to the party
28If I had money, I would go on holiday
29 if he weren’t lazy, he wouldn’t often get bad marks
30If you don’t do it now, you will not finish it on time 

Mik xin ctrl hay nhất ạ.Thanks^_^