— will your English teacher come back?—In two days. A. When B. How long C. How soon

问题补充：

— will your English teacher come back?

—In two days.

A. When B. How long C. How soon

答案：

解析：考查特殊疑问词的用法。根据答语In two days.可知提问应该使用how soon，意思是“多久以后”。