— does John go to school?—He takes the underground.A. HowB. WhatC. WhenD. Where

问题补充：

— does John go to school?

—He takes the underground.

A. How

B. What

C. When

D. Where

答案：

(答案→)A. How

B. What

C. When

D. Where

解析：How怎样，如何；What 什么；When什么时候；Where在哪儿。根据答语，他乘地铁。可知选A，约翰怎样去学校？