题目内容：

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短文。短文中共有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。

I hate to say sorry，and there is a change in my school arrangements．So I’m afraid I won’t able to keep my appointment to discuss Chinese paintings with you．I sincere apologize to you for any inconvenience causing by the unexpected change．Therefore I suggested we put it off from 3 pm this weekend until the same time in next Thursday．Will that be fine for you? Good news is that a exhibition of Chinese paintings are to be held this weekend．Works by many nationwide famous painter will be included，among who Qi Baishi is most famous in China．A visit there will surely help you better understand Chinese paintings．

Looking forward to your earliest reply．