12. What … last Saturday? A) Were they buying B) They bought C) Did they buy D) They were buying 13. Mary … that he was not right. A) Was understanding B) Have understood C) Understood D) Has understand 14. The train … on time so we were late. A) Didn’t come B) Wasn’t coming C) Wasn’t come D) Didn’t came 15. How many chairs … to the room? A) You have brought B) Have brought you C) You did bring D) Did you bring 16. When I phoned she … a bath. A) Had B) Was having C) Was have D) Has 17. What … when your mother came back home? A) Were you doing B) You did C) You were doing D) Did you 18. What … her about the school ? A) You told B) Did you told C) Told you D) Did you tell 19. She … because she couldn’t find her dog. A) Cried B) Was crying C) Crying D) Cry 20. My parents … in 1970 A) Got married B) Get married C) Were getting married D) Getting married