---He is a very hard-working student.-. As far as I know he often burns the midnight o

问题补充：

---He is a very hard-working student.

---. As far as I know, he often burns the midnight oil.

A. You can say that again

B. Absolutely not

C. Heaven knows.

D. No way

答案：

(答案→)A. You can say that again

B. Absolutely not

C. Heaven knows.

D. No way

解析：此处You can say that again所言极是；Absolutely not绝不；Heaven knows.天晓得；No way没门。

句意：— 他是一名勤奋的学生。— 所言极是。据我所知，他常常熬夜。根据句意选A。