如果你是图中的学生，有一天在放学的路上目睹了图中的情景。请你以What shall I do?为题，用英语写一篇字数不少于80个的短文。要求以第一人称描述图画情景，并谈谈你会怎么办?说出自己的理由。注意：本题不能出现真实姓名、学校等有关信息。
One day, I was on my way home when I saw a man and a lady get off a bus. The lady had a beautiful handbag with her. To my surprise, I found the man began to follow the lady quietly. I was afraid something might happen and decided to follow them. Seeing the street was almost empty, the man went up, snatched (grabbed)the handbag from the lady, and got away with it. Now the lady was running after him, shouting, "Stop thief! Stop thief!" "What shall I do? Shall I call 110 or..."