Here are the correct forms of the verbs for the sentences provided:

20. Our teacher **lives** on Quang Trung street.
21. Nam and Mai **do** the housework now.
22. What **does** your mother **do**?
23. She is cooking.
24. How **do** you **go** to school every day?
25. Nam **goes** to work by car every day but today he **takes** a bus.
26. Where **does** your father **work**?
27. Look! The teacher **is coming**.
28. She is very clever. She **speaks** 4 languages.
29. Steve often **smokes** 10 cigarettes a day.
30. We usually **have** dinner at 7:00.
31. Anne **washes** her hair twice a week.
32. Jane **teaches** English to children.