snow has prevented -----(communicate)with the outside world for three days
问题描述：
snow has prevented -----(communicate)with the outside world for three days
答
communication
communicate变成名词形式,才能作prevent的宾语.
Snow has prevented communication with the outside world for three days.
大雪已经阻止了（本地）与外界的沟通达三天之久.