... Unit 6 : The environment3, Speak Period 38 : Lesson 2: Speak + ListenTraffic jam(n)Tắc nghẽn giao thôngExhaust fume(n) Khói bụiTo ... somebody to do somethingI think you should Why don’t you ? Unit 6 : The environment3, Speak Period 38 : Lesson 2: Speak + Listen- Use banana leaves to wrap food ( plastic bags are very hard ... should Why don’t you ?New wordsTo litter To prevent English 9Unit 6 : The environment Period 38 : Lesson 2: Speak + Listen Time109876543210981257463 Time109876543210How...