1. to, too, two
2. there, their, they're
3. here, hear
4. see, sea
5. know, no
6. write, right
7. your, you're
8. its, it's
9. then, than
10. brake, break
11. buy, by, bye
12. dear, deer
13. hear, here
14. hour, our
15. idle, idol
16. knight, night
17. knew, new
18. lead, led
19. mail, male
20. meat, meet
21. pail, pale
22. peace, piece
23. pray, prey
24. principal, principle
25. road, rode
26. sail, sale
27. soar, sore
28. stair, stare
29. tail, tale
30. wait, weight