10. She has been at school.(Where) Where has she been?
11. They are doing some work now. (What) What are they doing now?
12. I like skating very much.(How) How do you like skating?
13. He came back at two o'clock.(When) When did he come back?
14. The book costs three dollars.(How much) How much does the book cost?
15. They gave some toys to their friends.(Whom) Whom did they give toys to?
16. He has learnt many poems.(Who) Who has learnt many poems?
17. We have heard story.(What) What have you heard?
18. We got to the mountains on foot.(How) How did we get to the mountains?
19. They have gone to the cinema.(Where) Where have they gone?
20.Tim is helping his mother at the moment.(Whom) Whom isTim helping to?
21.We were in the country in summer.(Where) Where were you in summer?