阅读短文，选择合适的答案，完成下面各题。

Dear diary,

    It was March twelfth today. It was a good Sunday. It was warm. I went to the park with some friends. We planted some trees in the park. Spring is the best season to plant trees. And it's the good time to fly kites. After planting trees, I flew kites with Lily on the grass. The kite looked like a butterfly. It flew happily in the sky. It was so beautiful. Some boys played hide-and-seek (捉迷藏) on the grass. Everyone was happy.

Peter