Who is lying？

到底是谁在撒谎？

A crime（犯罪）happens near Dinos house. A man walks along a road. Suddenly， someone shoots（射擊）him. He falls backwards（向后倒）and hurts（受伤）the back of his head.

A policeman sends him to the hospital. The man tells the story. The gunman （枪手）has red hair. And he wears a white suit. The police find a suspect（嫌疑犯）. His name is David.

David says，“I just walked around the street. And I saw a gunman. He shot this man from behind. Then I ran away.”

Detective Paul hears the story and says，“David is lying. He is likely to be（有可能是）the gunman.”

Do you know why David could be the gunman？

（答案请见P48）

（乐乐/摘编）