Last weekend,I went to picnic with my friend.The weather was sunny, and we were very happy.we went to a mountain.There is some beautiful tree and some smart animal in the mountain.we sit under a tree.I saw my watch--it was 12∶00,we ate some tomato and some bread.About 15∶00,it was dark,so we go home,the birds and the tree spoke to us:"good bye!good bye!"