Question

一Jack works very hard, but he makes little progress.

一 __________,he should improve his method of study.

A.After all B.In that case C.Once in a while

Answer

B

【解析】

句意：——杰克学习很努力，但是他几乎没有取得进步。——在那种情况下，他应该改进他的学习方法。

考查情景交际。After all毕竟；In that case在那种情况下；Once in a while时不时。根据第二句中“he should improve his method of study”可知，此处是“在杰克努力但是没有明显进步的情况下，应该改进学习方法”，所以使用in that case。故选B。