`IV`

1. Antarctica is the coldest place in the world

2. You should do morning exercises every morning

3. My father is going to repaint our house before Tet

4. Fansipan is the highest mountain in Indochina

5. Nobody in Nam's class is taller than him

`V` 

1. Tomorrow, Hoa will buy flowers for her father's birthday

2. Nobody in my class is better at Maths than Minh

3. At twelve o'clock at night, everyone says "Happy New Year" and they wish their friends and relatives good luck

4. How often do you go fishing with your father?

5. The new market is inconvenient because it is far from our flat buildings

IV.

31. is the coldest place in the world

32. should doing morning exercise every morning

33. my father will repaint our house before Tet

34. is the highest mountain in Indochina

35. is taller than Nam

V.

36. Tomorrow, Hoa will bye flowers for her father's day

37. Nobody in my class is better at Math than Minh

38. ko bít làm, sorry nha !!!

39. how often do you go fishing with your father

40. new market is inconvenient because it is far from our flat building.