The new secretary is a quick worker and the boss is quite satisfied with her.A. subject

问题补充：

The new secretary is a quick, worker, and the boss is quite satisfied with her.

A. subjective

B. sufficient

C. adequate

D. efficient

答案：

A. subjective

B. sufficient

C. adequate

(答案→)D. efficient

解析：考查形容词。efficient效率高的,有能力的。句意：新来的秘书是个敏捷的、效率高的工作人员，老板对她很满意。选D。