Giải bài tập:
1. What
2. How much
3. How often
4. How much
5. How often
6. How many
7. How much
8. How long
9. How many (vì có grams)
10. How much (sữa không đếm được)
11. Does she/he
12. What
13. What
14. How often
15. Which/ What
16. How often
17. What
18. How much
19. How many
20. Does she/he
21. What
22. How
23. Which
24. Who
25. Who
26. What/ Which
27. What
28. What colour/ color
29. What time
30. What
31. How many
32. Which
33. What
34. How much
35. How
36. What
37. How is
38. Whose
39. Where
40. How much
41. Who