假如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。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：在错的词下画一横线，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 Mary,
I am Senior 3 student. I’m going to take part in this summer’s college entrance examination. In preparation for it , I am studying every hard. As a result, I often feel exhausting both physically and mentally. Therefore, my parents still put a lot of pressure to me. I know the y have great expectations for me , but I feel the pressure is too heavy for me not to cope with. I attempted to communicating with them, but failed.
Now I quite upset about it .How can my parents understand us ? I really don’t know how to do . Could you please give me some advice?
Looking forward to your reply.
Yours
LiH
，最后小球落在斜面上的N点,且重力加速度为g， 由上述条件某同学试图求出：①小球什么时刻与斜面间的距离最大；②小球空中运动的时间；③M、N之间的距离；④小球落到N点时的速度大小和方向等4个量。那么你认为他最多可以求出其中的（ ）
