问题
选择题
—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
答案
答案：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。