提示词语: Muhu Park, pick up, water, put up posters, gloves, shoes
提示问题:When and where will you go?
What will you do in this activity?
What do you advise Peter to prepare for this activity?
Dear Peter,
How is it going?
I'm writing to invite you to take part in the volunteer activity.
I'm looking forward to your early reply.
Li Hua