短文改错（共10小题；每小题1.5分，共15分）
下面短文中有10处语言错误。请在有错误的工方增加、删除或修改某个单词。
增加：在缺词处加一个符号（^），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：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. 每句不超过两个错误；
2. 每处错误及其修改均只限一词；
3. 只允许修改10处，多者（从第11处起）不计分。
Today we had a chemistry test. I found the test difficulty, but I tried hardly to do it. Suddenly Mary, my best friend, asking me to let her to copy my answers. After think for some time, I let her copy my answers. But after the test, all of us were called to the teacher's office. The teacher was angry because we had same answers in the tests. We were warned not to cheat again so she would need to see our parents. I was very upset. I didn't cheat. I was just helping a friend. Why does she punish me?difficulty改为difficult
网友回答
(答案→)difficulty改为difficult
解析：
【小题1】该句里difficult做the test的宾语补足语，其中结构为find sth +形容词。
【小题2】try hard to do sth 努力做某事，hardly意思是几乎不，故改为hard（努力）。
【小题3】该句中ask作谓语，因此需要用ask的过去时asked。
【小题4】let sb do sth 为固定结构，故不用to。
【小题5】该句中after为介词，之后需用动词的ing形式。
【小题6】根据语篇，文章中只涉及到作者和他朋友两个人，故用both，而all指代范围为三者或者三者以上。
【小题7】Same前通常加定冠词the。
【小题8】此处只涉及到前文提及的chemical test，不涉及其他的测试，故用单数。
【小题9】两句之间的关系不是因果关系，故不能用so，而用or（否则）表警告。
【小题10】整篇文章讲诉的是一件过去的事情，动词要用过去时。