It"s much colder today than _____ yesterday.A/ B that of C that D it is

问题描述:

It"s much colder today than _____ yesterday.A/ B that of C that D it is

选A
不需要代词,比较的是今天和明天,今天比昨天冷
若选D,必须是it was,因为是昨天,用过去时

that of

B that of