... D. for 28. A. tree B. mountains C. river D. lake 29. A. from B. for C. of D. to 30. A. truck B. cars C. trees D. flowers VI. Đọc đọan hội thoại và chọn câu trả lời đúng cho mỗi thông tin sau: ... D. of 7. There is an intersection ahead. We ………… slow down.A. must B. mustn’t C. can D. can’t 8. Our roads are ………… places.A. danger B. dangerous C. difficulty D. difficult 9. ………… man is ... Lan Nga: (16) ………… are you doing? : I’m doing my math (17) …………: What is Tuan doing?: He ( 18) …………… soccer.: Are Nam and Quan doing (19) …………. homework?: No, they aren’t.: Are they playing...