----- Nội dung dịch tự động từ ảnh ----- 23. Amelia Earhart A. tried 24. My brother is a computer programmer and he to fly around the world in 1937. B. tries C. tryed D. is trying software for a bank. A. plans B. designs C. checks D. prepares are often used to help people and take them to hospital in places like mountain C. Helicopters D. Emergency 25. A. Buses B. Tractors 26. Facebook is a_ networking site. C. friends about the cultural rules in the countries you B. social A. personal 27. When you travel, you have to D. computer visit. A. knew B. knowing C. know D. knows 28. You use your phone in class. B. mustn't A. can C. have to D. should