改错：someone in the office had made a mistake,and the firm ((regretted to have casused))改错题：someone in the office had made a mistake,and the firm ((regretted to have casused)) the customer inconvenient.为什么括号里的错了,

I think someone is in.Let's knock the door.改错 I think someone is in . Let's knock the door. 改错 The teacher is in the front of the class改错 the guidepost is in the corner of the street 改错 、.改错.1.The library are in front of the school. In which part of the town the school situated?改错 Everyone of the class are in the ciassroom now.改错 改错:The rabbit is in front of the tree the little boy struggles in the world of silence 改错 改错 The sofas is in front of the table 改错1.You can speak free in front of your friends 2.Someone called you right now Tere is a big tree in the front of the classroom.改错改错!哪裏错了? there are thousand of people in the park 改错 Spring is one of the best season in beijing改错 There is a playground in middle of the park?改错 Both of the children are in Grade 5.(改错） There is a lot of breads in the room.改错 There is a boy in the front of me改错