You’d better           your scores and see if you have passed the exam．

A. add up               B. add up to              C. add to                      D. add to up

You’d better ______ your scores and see if you have passed the exam.

 You’d better ______ your scores and see if you have passed the exam.

You’d better________ your scores and see if you have passed the exam.

You’d better        your scores and see if you have passed the exam.