--is the post office ?Go straight and turn right.A. WhereB. WhatC. WhenD. Who

问题补充：

--is the post office ?--- Go straight and turn right.

A. Where

B. What

C. When

D. Who

答案：

(答案→)A. Where

B. What

C. When

D. Who

解析：此题考查疑问词的区别。根据答语可知询问的是邮局的地理位置，故用疑问副词where。