翻译初一英语:tom,sonia,jane and other students are in their classroom .they suddenly find a pencil case ,a ruler and an eraser on the floor .tim ask sonia ,''ls this your pencil case?''sonia answers ,''yes ,thank you ,and that is my ruler ''tim asks again ,''hi,jane !ls this your eraser ?''jane answers ,''no,it is not .it is your eraser .my eraser is yellow .''tim says to himself ,smiling ,''oh ,it is my eraser .''then all the students laugh.