求一篇英语作文根据以下提示写一则通知 60到70个单词参加对象:具体活动5月1日爬清源山,在山上野餐出发时间：早上7：0

Attend object: eighth-grader
Specific activities May 1, QingYuanShan in on a picnic to a mountain to climb
The time of departure: school set at 7 every morning. 7:20 start
Note: wear sports shoes are brown baggers and water, be sure to arrive on time