is your uncle?-He is a driver.A. WhoB. HowC. WhatD. Where

问题补充：

--- is your uncle? ---He is a driver.

A. Who

B. How

C. What

D. Where

答案：

A. Who

B. How

(答案→)C. What

D. Where

解析：疑问词辨析。Who谁；How怎么样；What什么；Where在哪儿。根据答语，他是一个司机，可知询问的是职业，故用what来提问。选C。