- class are you having?-- Math.A. WhatB. WhichC. WhenD. Why

问题补充：

---- class are you having? ---- Math.

A. What

B. Which

C. When

D. Why

答案：

(答案→)A. What

B. Which

C. When

D. Why

解析：What什么；Which哪一个；When什么时候；Why为什么；根据下文答语，数学。可知选A,你正在上什么课？