下面文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏词符号（/\），并在该句下面写出该加的词。
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。
I am glad to hear of you again. You want to know that everything is going in our school. In
Shortly, all has been improving since the school had began to carry on new policies. In the past,
teachers always keep on explaining the points in class. Our students just listened and took note.
But now we often discuss and try to solve the problems raising by the teachers or ourselves. Before class, we enjoy different kinds of activities instead of doing endless homework. For example, we can read what we are interested in. We can go to the library or surf Internet for various kinds of information. We are now masters of study, and we are happy.