mk cần trước 9h giúp mk nha!
31. ( Do / shouldn't / should / Don't ) throw trash in the street.
40. What does Ba do in his free time? He ( works in the factory / goes fishing / learns his lessons / does his homework )
43. I'm thirsty. I ( like / can like/ would like / want to like ) some orange juice.
47. We save the earth by not (make / cutting / eating / having ) down the forests.
56. John is from the USA. He's ( America / American / British / England ).
60. We ( do / make / collect / play ) waste paper.
62. I need a ( little / few / lot ) time to think about it.
63. Mr. Tan has many paddy fields and he produces ( a lot of / a little / a few / lots of ) rice every year.
66. We need more land because the population is ( growing / smaller / producing ).
71. We collect empty cans and ( produce / recycle ) them.
77. Cutting down tree is ( protecting / destroying / wasting ) the environment.