Đổi câu chủ động thành bị động Somebody cleans the room everyday -> the room They cancelled all the flights because of fog . -> all the flights People do not use this road very often . -> this road How do people learn languages? -> How People advised us not to go alone . ->We They are going to build a supermarket next year . -> a supermarket She is using the computer at the moment -> the computer They are opening a new ring road round the city -> a new ring road They have built a big hospital which costs much money -> a big hospital The girl did not give me the money -> I