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.
→❤← 
31. don't or shouldn't. mk nghĩ don't sẽ đúng hơn
40.goes or learns hís lessons
43. would
47.mk hơi phân vân. chắc là cutting
56.American
60. collect
62.few or lot. mk chắc chắn few hơn
63. a lot of or lots of. hai từ đó cùng nghĩa nhau nên mk hơi phân vân.chắc a lot of sẽ đúng hơn
66. growing
71. recycle
77. destroying
k mk nha.