Suppose you are Sonia. Complete the following letter. Introduce what your friends are doing according to the pictures. （假设你是Sonia，根据下列4张照片和所给的单词完成一封信，介绍你的朋友们都在干什么。）            
First: Tom and Mary, sing     Second: Mike, run, like            
Third: John, play soccer        ourth: Lisa, Amy and Eric swim, enjoy
Dear Bob,     
     Here are some of my photos. _______________________________________________________________________________________________________________________________________________________________________________________________________________________