Ответ:
1. Does Sara speak English?
Yes, she does.
2. Is Mark playing the violin?
Yes, he is.
3. Where were your grandparents?
They were in Rio.
4. Have you finished the exercises?
Yes I have.
5. When they will come to school?
They will come next week.
6. What he did yesterday?
He broke her favorite cup.
7. Has the dance show alrady finished?
Yes, it is.
8. What was Robert doing when I came?
Robert was dancing.
9. When will your brother prepare for the exams?
Tomorrow from 2 till 6.
10. When will your friends come to New Zealand?
They will come by 7 pm the day after tomorrow.