31.F

-> Dẫn chứng : Vietnamese people of have thee meals a day - breakfast, lunch and dinner. 

-> Thông tin ở câu đầu tiên của đoạn văn 

32. T 

-> Dẫn chứng : People in the countryside usually have rice with meat o fish and vegetables for breakfast 

-> Thông tin ở câu thứ 2 của đoạn văn 

33. T 

-> Dẫn chứng : people in the cities often have light breakfast with a bowl of Pho or instant noodles or sticky rice before to work for lunch, they often have rice, meat ,fsh and vegetables. 

34. T

-> Dẫn chứng : people in the cities often have lunch at the canteens ot at the food stalls.

35. T 

-> Dẫn chứng : Most people prepare their diner at home . 

36. I have played the piano since 2018 . 

-> S + started/began + to V/V-ing + ... 

-> S+ has/have+ Vpp+ ... + since/for + time 

37. My old school isn't as big as my new school . 

-> S+ tobe/V + not + as/so + adj/adv+ as + N/pronoun