31.B. Lam must do the chores all they

Vì trong câu cho có từ has to: phải ; has to ⇔ must: phải

32. A. My father usually smokes when he was young.

Vì công thức: HTĐ when QKĐ

33. Hoa is old enough to ride a bike (câu này mình không chắc lắm)

Vì enough to: chưa đủ

34. You ought to eat more fruits and vegetables.

Vì ought to: phải ; eat more ăn nhiều hơn nên fruit thêm s

35. I used to go school by bike

Vì used to + V1: đã từng ; by + phương tiện

36. There is a bed in the left corner of the room.

in the left corner: ở góc trái

D.WRITING

I.

31 - B

32 - D

II. 

33. Hoa is old enough to ride this bike

34. You ought to eat more fruit and vegetable

35. I used to go to school by bike

36. There is a bed at the corner of the room 

#nocopy

Chúc bạn học tốt:3