31. Unless she keep pace with her classmates, as she is often adsent from class
32. Unless I knew her address, I couldn't write to Alice
33. Unless I tell you, I don't know the answer
34. Unless the pupils go swimming, today isn't Sunday
35. Unless it rains, everybody will go out
36. Unless he don't fails the final examination, he won't be able to graduate

22. Unless I feel better, I won't go to school,
23. Unless I question him, Tony won't talk to you,
24. Unless you put on your overcoat, you'll be cold
25. Unless you work hard, you will fail the exam
26. Unless you keep your feet dry, you'll get a cold
27. Unless I leave now, I'll miss my flight
28. Unless you are going to the party, I won't go
29. Unless you give me your address, I can't send you a poscard
30. Unless you don't go, I'm going to the wedding ceremony
31. Unless she keep pace with her classmates, as she is often adsent from class
32. Unless I knew her address, I couldn't write to Alice
33. Unless I tell you, I don't know the answer
34. Unless the pupils go swimming, today isn't Sunday
35. Unless it rains, everybody will go out
36. Unless he don't fails the final examination, he won't be able to graduate