What the expert has said and done will be to the department manager.A. valueB. benefitC.

问题补充：

What the expert has said and done will be to the department manager.

A. value

B. benefit

C. of valuable

D. of benefit

答案：

A. value

B. benefit

C. of valuable

(答案→)D. of benefit

解析：考查固定用法。value 价值，价格；benefit利益，好处。句意：专家说的和做的要对部门经理有利。 Of +名词=该名词转换的形容词；of benefit=beneficial有益的；故选D。