---It’s burning hot today, isn’t it? ----Yes. yesterday.
A. So was it
B. So it was
C. So it is
D. So is it
网友回答
(答案→)A. So was it
B. So it was
C. So it is
D. So is it
解析：考查固定结构。句意：--今天很热，是吗？--昨天也是，表示下文和上文情况一致，用so+助动词/系动词/情态动词+另一主语，表示后者也怎样。上文用的是系动词，下文也用系动词，且指昨天，所以要用系动词的一般过去式。选A。