短文改错练习
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。作文中共有
10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏子符号（∧）并在其下面写出该加的词。
删除：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改
10处，多者（从第
11处起）不计分。
AThis morning my parents took my sister and me to the zoo. At the noon we had a picnic on the grass. I eat too much, so I couldn't finish my sandwich. As I didn't know what to do with it, I asked my sister for advices. She pointed at the notice, that said, "No litter." And she asked me throw the  ...