完形填空
      It's a fine Sunday morning. The weather is1. A lot of children2 in the park. They are3 happily. Some are playing4 under a big tree. Some girls are singing and dancing. Some boys are running5 the hill. Li Lei is6by the lake. He's reading a story. 7 is Wang Lin? He's standing over there. 8is he doing? He's looking9 a nice butterfly（蝴蝶）. He10to catch (捉住) it.