Bill也要参加.用英语给他写一封信,告诉他去植物园的路线,进门直走,然后到湖边亭子左拐,左拐后走100米,在山脚下集合

Dear Bill,
I am very glad to tell you something about the trip to botanical garden on the weekend.
First,when you get to the botanical garden,just walk into it and go straight ,then turn left at the kiosk near the lake and walk a hundred meters to the foot of the hill.
Second,we will get togehter near a big tree at the foot of the hill,don't go away.
Last but not least,be sure to take food and drinks,and we will have a picnic there.You can also take your camera,sunglasses,umbrella and so on.
I hope you have a good time.
yours,XX