短文改错
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。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：在缺词处加一个漏字符号（），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。
Li Hua and Wang Hai are students of Senior Three. They all work hard but have different learning methods. Li Hua listens to her teachers attentive and tries to catch everything the teachers say. She spends more time doing her homework. It is certain what she can go to bed earlier and always keeps energetic in the day.
However, Wang Hai had a different way of learning. He likes to stay up late at the night, so he often feels sleepy in class. Thus, he misses lots of key point and it usually spends him more time to finish his homework, that makes it difficult for him to concentrate what he is doing. I prefer Li Hua's learning method.