Revision of modal verbs – KEY Exercise 1 1.c 2..b 3. a 4. c 5. c Exercise 2 1.must 2..don’t have to 3. must 4. mustn‘t 5. don’t have to 6. doesn’t have to 7. must, mustn‘t 8. doesn’t have to, must Exercise 3 1.should 2..shouldn‘t 3. have to 4. should 5. don’t have to 6. shouldn‘t 7. should Exercise 4 1. b 2..b 3. a 4. a 5. b 6. b 7.b 8. a 9. b 10. a