请问这篇英语作文怎么写假设你叫刘芳,请你以明信片的方式向你的美国朋友MARY介绍一下近期的天气情况,简单的介绍人们的活动

Hi,Mary,It is spring time in Shanghai now.Most time,the sky is clean and blue.Sometimes,we have drizzling here.It gets warmer every day.Many people get up early and do exercises in the park.You can see some Americans jogging along the streets.I know you like birds.You can see swallows flying around here.Please come soon.I will show you around the city.
Yours
Liu Fang
P.S.Xingyu says hello to you.