阅读下面的短文，掌握其大意，然后从所给A、B、C三个选项中选择最佳选项。
Hi Jerry,
Thank you1your invitation to2your school next week. I am sorry I3come. I'm not going to be4next week. On Monday, I have a piano lesson58:00 to 10:00 in the morning, and I have to study for the English test in the afternoon. On Tuesday, I am6a friend from my hometown at the airport. On Wednesday, I am7tennis with my friends. I have to look after my 8grandpa on Thursday. On Friday, I'm helping one of my classmates 9 his English. I am busy10week.
