13. Mrs. Robinson bought a poster.
=>What did Mrs Robinson buy ?
14. My father was in Ha Noi last month.
=>Where was your father last month ?
15. He traveled to Nha Trang by coach.
=>How did they travel to Nha Trang ?
16. She went to the doctor because she was sick.
=>Why did she go to the doctor ?
17. Nam left home at 7 o'clock yesterday.
=>What time did Nam leave home yesterday ?
18. He taught English in the high school.
=>What did he teach in high school ?
19. The homework was very difficult yesterday.
=>How was the homework yesterday ?
20. She often does the housework after doing exercises.
=>When does she often do the housework ?
21. They are planting some roses in the garden.
=>What're they planting in the garden ?
22. Liz will send these letters to her friends.
=>Who'll Liz send these letters to ?
23. My favorite subject is Math.
=>What's your favourite subject ?
24. Yes, we do. (We have magazines and newspapers)
=>Do you have any magazines and newspapers ?
25. I often listen to music in my free time.
=>What do you often do in your free time ?
