求一道英语完形填空题的答案Driving through snowstorm on icy roads for long

求一道英语完形填空题的答案
Driving through snowstorm on icy roads for long distances is a most nerve-racking experience.It is a paradox that the snow,coming __1__ gently,blowing gleefully in a high wind,all the while __2__ down a treacherous carpet,freezes the windows,__3__ the view.The might of automated man is__4__ .The horses,the powerful electrical systems,the deep-tread tires,all go __5__ nothing.One minute the road feels __6__,and the next the driver is sliding over it,light as a__7__,in a panic,wondering what the heavy trailer trucks coming up__8__the rear are going to do.The trucks are like __9__ when you have to pass them,not at sixty or seventy __10__ you do when the road is dry,but at twenty-five and thirty.__11__ their engines sound unnaturally loud.