It is very cold outside the room---- a.so it is b.so it is not c.so does he选哪一个 为什么
问题描述：
It is very cold outside the room---- a.so it is b.so it is not c.so does he选哪一个 为什么
答
选A
表示赞同,“的确如此”
it 指代“It is very cold outside the room” 整句
就是说 这整句话表达的意思“的确是真的”