Dear Li hong
Thank you very much for inviting me to seaside。I'd like to go but I can't。my parents are out on business。they are coming back next month。and now I have to look after my grandma because she is ill in bed。and I also need to study for my coming Enlish test
I am very sorry,thanks for your invitation。I hope you can have a good time。
Thank you for your invitation. I'd like to go to seaside. But I have already had another appointment with James.