Tờ 7:
X:
1: Why did their guests leave for home?
2: What do I 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 do you ought to put the rug?
6: How does your mother often go to work?
7: How many pairs of stockings did her sister buy yesterday?
8: How often does Mr. Tuan go to HN?
9: What’s the name of that book by Mark Twain?
10: When did she have to wear glasses?