单项选择题
A．let them shoot over you without any danger B．be certain of hitting your target(靶子) C．easily shoot from behind them D．fire straight at your enemy
A．a computer game B．an underwater game C．how to use modem weapons on your enemies D．an army training exercise
A．a food shop B．a cafe C．a restaurant D．a cafeteria(自助餐厅)