26. carry out / work out / point out / find out 实现/ 做出/ 指出/ 查明 27. catch up with sb / keep up with sb / put up with sb 赶上某人/ 跟上某人/ 容忍某人 28. change sth into sth / exchange sth for sth 把……变成/ 交换 eg. Can you change this note...