The document contains 39 sentences using modal verbs to express various levels of certainty or obligation. The modal verbs used include must, should, needn't/doesn't have to, may, can't, and mustn't. The sentences provide examples of how these modal verbs are used to talk about actions that are required, recommended, permitted, or unlikely based on the information provided.

1. 2batREPHRASING WITH MODALS – ANSWERS
1. John must have locked the office before leaving. He always does.
2. You should tell him the truth.
3. She needn’t / does not have to phone me back.
4. Ann needn’t have finished the project on her own.
5. I shouldn’t have sold the house.
6. We may go swimming tomorrow.
7. Mary must be at home because the windows are open
8. John might have known about the trip.
9. He can’t have locked the door.
10. She may have been at work when the earthquake struck.
11. We may/could/might rent our house in summer.
12. We must finish the article today.
13. He needn’t have behaved like that.
14. You mustn’t smoke in the underground.
15. They may have been/gone away last weekend.
16. Ann can’t have sent that letter.
17. We must talk before the meeting starts.
18. Ann can’t have stolen the money.
19. We could go on a camping trip.
20. Shall we go to Diagonal Mar? We could go to ...
21. They may have told John about the party.
22. We don’t have to book a table (We needn’t book a table).
23. You mustn’t drive without fastening your seatbelt.
24. They can’t have known about the trip.
25. You should do some more exercises.
26. I may go on holiday to Menorca.
27. I shouldn’t have taken the car.
28. Something must be happening tonight.
29. All students must attend lessons.
30. They may move to Australia.

2. 31. Helen must know about the accident.
32. He may have hired a van.
33. You mustn’t use the phone without permission.
34. You shouldn’t trust John.
35. She can’t have taken the key.
36. I may start a new career.
37. You needn’t have told Jan what really happened.
38. I shouldn’t have sold the house.
39. All visitors must show their ID card.