20. " Are you interested in cooking " Lan Ames me were you interested in cooking ? 

21. " Where is my umbrella ? " She asked Where was her umbrella ?
22. " What are they doing ? " She asked What were they doing ?
23. " where have you been ? " The mother asked her daughter where had her been ?
24. The teacher asked me " What does your son want to learn ? "
25. " How do you know that ? " My friend asked me How did you know that ? 
26 . " Has vào talked to Kevin ? " My friend asked me Had you talked to Kevin
27. " Where are you studying ? " She asked Năm  Where are you studying ?

28. " Where are you going next Sunday ? " He asked me Where were you going next Sunday
29. " How do you learn English ? " The examiner asked Lan How did you learn English ?
30. " How far is it from your house to the stadium ? " Nga asked mai How far was it from your house to the stadium ?