Bài 2:
1. Why did their guest leave for home?
2. What do you have to do ?
3. How much information did the secretary give Mr. Green ?
4. What time did the two men return to the office?
5. Where should i put the rug ?
6. How does your mother often go to work ?
7. How many pair of stockings did her sister buy yesterday?
8. How often does Mr. Tuan go to HN ?
9. What is the name of that book by Mark Twan ?
10. When did she have to wear glasses ?