Question

—This returned Chinese scholar has become one of the top experts in this field.
—Yes , I know him very well. He ___________ in Africa with wild animals for eight years.

A．has worked

B．had worked

C．worked

D．has been working

Answer 1

C

考生极易受for eight years这一时间状语的干扰，从而选完成时。其实，只要仔细审题，就不难看出这是对一般过去事实的论述。故选C。