It isn’t so much whether he works hard; the question is whether he works .A. above allB. i

问题补充：

It isn’t so much whether he works hard; the question is whether he works .

A. above all

B. in all

C. at all

D. after all

答案：

A. above all

B. in all

(答案→)C. at all

D. after all

解析：短语辨析。 above all首先，尤其是；in all总共，合计；at all 根本，究竟；after all毕竟，终究。句意：现在不是他工作是否努力的问题，而是他究竟是否工作的问题。故选C。