—Jane is a very good student.—She doesn’t study hard.A. Yes she is.B. I’m afraid not.C. I

问题补充：

—Jane is a very good student.

—She doesn’t study hard.

A. Yes, she is.

B. I’m afraid not.

C. I think so.

D. I hope so.

答案：

A. Yes, she is.

(答案→)B. I’m afraid not.

C. I think so.

D. I hope so.

解析：Yes, she is.是的，她是；I’m afraid not.我恐怕不；I think so.我想是这样；I hope so.希望如此。句意：简是一个非常不错的学生。根据下文，她学习不太努力。可知前文表示否定回应，故选B。