初二英语作文你是mary,你的朋友lucy邀请你下个周末去远足,大使你很忙,不能去,请你给他写封邮件,礼貌的回绝他的邀请

Dear lucy,
How are you?Thank you for your invitation of the hiking.Unlucky,I cannot make it because I am busy next weekend.I will prepare for my English test next weekend,so I need to study at home.Next month is my summer holiday.How about going to visit Hong Kong together?Hong Kong is a modern and beautiful city.I really hope that we can go sightseeing there together.
I am looking forward to hearing from you.
Yours,
Mary