câu 2 có trong tờ giấy mà : they say that some of the goods are damaged, so we have to exchange them
câu 5 : we are opening the third subsidiary next year
câu 13: if you want to progress soon, be energetic and entusiastic at work
câu 15 có trong sách mà: most university lecturess have to do research in their specialist area
câu 16: you will earn a bouns when achieving monthly goals
câu 17 có trong sách: i wouldn't like to work overtime, even if the pay was very good
câu 18: couldn't chứ không phải could
câu 30 trong sách có câu tương như vây: i'm afraid that she isn't here at the moment