(to hear) a loud bang and the father (to lose) control of the car. they (to be) injured and their lives (to be) in great danger. a helicopter (to take) the father and the boy to hospital and they (to be) saved. now, the happy father (to look) at his son and (to say) to him: "i never (to drive) my car when it (to snow). i (to promise) you. it (to be) very dangerous to drive when it (to be) so slippery." 