假如你是李平,你的美国朋友Tom来信询问你假期过得怎么样.请你根据表格中的信息给他回信,说明你在假期中的活动和理由.

Dear Tom,
I'm very glad to receive your letter. And it's a pleasure to tell you something about how I spent holiday.
First, I had a good rest because recently I often felt tired as a result of my heavy study burden as well as lack of sleep and physical exercise. Of course, it took me two days to stay with my grandparents living in the countryside and help them do some housework and tell them what happened to me and my friends. What's more, I had a trip with my friends to appreciate the beauty of nature and breathe fresh air. What did you do in your summer holidays? I’m looking forward to hearing from you.
Best wishes!
Yours, Li Ping