谁能帮忙写两篇英语作文，万分火急，谢谢

Dear Li Xiao,
Happy birthday!Thanks for your invitation. But it's a pity that my mother doesn't feel well today so I can't go to your birthday party.Anyway, I hope you all enjoy yourselves.

Yours,
Mary

My summer holiday
I will be very busy this summer holiday. In July, I am going to Beijing with my family. We will pay a visit to the Great Wall and we will take lots of photos there. Besides, we are going to try a lots of delicious food in Beijing. In August, I am going to do my homework and after finishing doing it, I will go to the beach with my friends. We are going to play beach volleyball on the beautiful beach.I am sure I will have great fun this summer vacation and I can't wait for it.