Cover of the textbook English Grammar in Use

The key answer of exercise 17

The key to exercise solutions in chapter Additional exercises for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press


Complete the sentences using the words in brackets.


  1. might be having
  2. shouldn't have eaten
  3. must have forgotten
  4. needn't have gone
  5. can't be changed
  6. may be watching
  7. must have been waiting
  8. couldn't have done
  9. ought to have been
  10. would have helped 
  11. should have been warned
  12. might not have been feeling / might not have felt