关于what is it that和how it is that强调句的疑问句到底是What is it that.还是What it is that.The questions that puzzled them is ___ they can win.A how is it that B how it is that老师说选B 为什么

关于what is it that和how it is that
强调句的疑问句到底是What is it that.还是What it is that.
The questions that puzzled them is ___ they can win.
A how is it that B how it is that
老师说选B 为什么

选B how it is that
表语从句强调用陈述语气,谢谢!~