2º bachillerato B. Soluciones

*Activity 3: 1. could; 2. can; 3. couldn't have; 4. must have; 5. shouldn't have; 6. should have guessed; 7. have to; 8. will be able to do.

*Activity 4: 1. might have gone; 2. must have thought; 3. should have brought; 4. would have bought; 5. shouldn't have told; 6. could have stayed; 7. couldn't have been.