1)表示歉意并说明原因;
2)重约见面讨论时间;
3)推荐先参观国画展览。
注意:1)词数100左右;
2)可以适当增加细节,以使行文连贯。
I hate to say sorry, but there is a change in my school arrangements. So I am afraid I won't be able to keep my appointment to discuss traditional Chinese paintings with you. I sincerely apologize to you for any inconvenience caused by the u