If the horse won today,it _______ 30 races in five years.A.would have won B.must have won

问题描述:

If the horse won today,it _______ 30 races in five years.A.would have won B.must have won

条件状语从句
if the horse won,won 是过去时,意思是如果赢了,可是现实是没赢,与事实相反,所以主句用虚拟式