-Was it by cutting down staff are not diligent eough _ _she saved the firm?No

问题补充：

---- Was it by cutting down staff are not diligent eough _ _she saved the firm?

----- No, it was by improving work efficiency.

A. that;when

B. that;what

C. who;how

D. who ;tha

答案：

A. that;when

B. that;what

C. who;how

(答案→)D. who ;tha

解析：本题考查强调句型和定语从句。此处是强调句型的一般疑问句形式，by cutting down staff是被强调的部分。句意：通过减员她挽救了这家公司。