_____ a basin of water in _____ weather,ice will soon cover it.
问题描述：
_____ a basin of water in _____ weather,ice will soon cover it.
A.Leaving; frozen B.If you leave; freezing
C.Leave; freezing D.Leave; a freezing
为什么选C not B呢?
答
要是用if you leave的话,前半句的主语就是you,而后半句的主语是ice,同一个句子里不能出现两个不同的主语.而选C的话,前半句是祈使句,所以用原型.而freezing weather是指寒冷的天气.