假定英语课上老师要求同桌之间交换修改作文，请你修改你同学写的以下作文。文中共有10处语言错误，每句中最多有两处。错误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。
My classmate Liu Hui looks tired this week. This morning, I asked him if he had trouble in fall asleep. He said no and explained how he looked tired. “I want to do well on my studies, so I have been stayed up these days,” he said. Hearing that, I became worrying. “Staying up may not help you at all. If you want to study well, you should have had a good sleep every night,” I said. Though he disagreed with me. He believed that if he studied for two more hour every night, he would catch up others. I said nothing more but I’m sure he will realize what I told them is true one day.
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