1. Does Helen go to bed at 10 o'clock? - Yes, she does.
2. Is Nick playing chess now? - Yes, he is.
3. Do parents go to work every day? - Yes, they do.
4. Are the books new? - Yes, they are.
5. Is she hungry? - Yes, she is.
6. Did the girl go the swimming pool last year? - Yes, she did.
7. Can she swim very well? - Yes, she can.
8. Did our parents buy us presents? - Yes, they did.
9. Did the boy want to play with his dog? - Yes, he did.
10. Did my friend be in the country? - Yes, he did.
11. Is he going to visit his uncle toorrow? - Yes, he is.
12. Did we be tired last night? - Yes, we did.
13. Is she having a party this evening? - Yes, she is.
14. Was I/Were you cleaning the room when my/your parents came? - Yes, I was.
15. Were they going to meet me at the station? - Yes, they were.
16. Can we bring mobiles to school? - No, we can't.
17. Must schoolchildren change shoes before we go to the lesson? - Yes, we/they must.
18. Do people usually wear fancy clothes when they have Halloween Parties? - Yes, they do.
19. Will my friend finish school in two years? - Yes, he will.
20. Were the children playing in the yard all day long? - Yes, they were.