Pierre is a grandfather, ______

11. Pierre is a grandfather, ______? 
​A. he isn't​B. isn't he ​C. he is​D. doesn't he

12. Kate is a doctor, _____?

​A. she is​B. is she ​C. doesn't she​D. isn't she 

13. Jacques and Alicia are students, _____?

​A. aren't they​B. are they​C. isn't he​D. isn't they 

14. Mario is at work right now, _____?

​A. aren't they​B. isn't he​C. is he​D. isn't she 

15. You and I are busy right now, _____?

​A. aren't I​B. aren't we​C. we aren't​D. aren't you 

16. It's windy today, _____?

​A. am I​B. aren't they​C. isn't it​D. isn't he 

17. You wanted that, ______?

​A. would you B. didn't you ​C. wouldn't you​D. do you 

18. He saw that, ______?

​A. is he ​B. won't he ​C. didn't he ​D. doesn't he 

19. You know that's right, ______?

​A. would you​B. wouldn't you​C. don't you​D. didn't you 

20. He will be coming, ______?

​A. is he ​B. did he ​C. doesn't he ​D. won't he