12
11. Was I in the classroom 5 minutes ago?
12. Was your classmate in your home yesterday?
13. Were your friends with you this morning?
14. Could you speak English six months ago?
15. Shall I call a taxi now?
16. Should you study more?
17. Must I stay here?
18. Will you travel to the USA this year?
19. Would you like to be a millionaire?
20. May I smoke here?
21. May I come in?
22. Are you in a hurry?​