Cover of the textbook English Grammar in Use

The key answer of exercise 12.2

The key to exercise solutions in chapter Unit 12 - for and since / when ... ? and how long ... ? for the textbook English Grammar in Use with authors Raymond Murphy from Cambridge University Press


Look at each answer and choose the right question.


  1. When did they get married?
  2. How long have you had this car?
  3. How long have you been waiting?
  4. When did your course start?
  5. When did Anna arrive in London?
  6. How long have you known each other?