单项选择题
A．Put up your hands. B．Don't move or I'll shoot you. C．If you want to have lunch, you must listen to me. D．You go first slowly and we'll have lunch together.
A. Pretending to be somebody else. B. Following somebody from in front. C. Following somebody from behind. D. Standing in front of a shop window.
A．most people on the sidewalk were on the same side as himself B．no one suddenly turned into a doorway C．a man was looking into the windows of a store D．no one wiped his face with a handkerchief