假定英语课上老师要求同桌之间交换修改作文，请你修改同桌写的以下作文。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。
Dear Tom,
How nicely to hear from you again. You want to know what was going on in our school. In short, things have been improving until the school began to carry out exploring study.
In the past, the teachers always keep on explaining the points in the class. We students just listened and took note. But now we often discuss and try to solve the problems raising by the teachers or ourselves. After class, they enjoy different kinds of activities instead of doing endless homework. We can read what we are interested.
In a word，we are now masters of study, but we are very happy.
Best wishes.
Yours,
Li Hua