I really don’t know for certain____ they discussed.this important event very sec

题型：不详难度：来源：

I really don’t know for certain____ they discussed.this important event very secretly.

A．where was it that

B．where it was that

C．where that

D．it was where that

答案

B

解析

考查强调句型在宾语从句里边的用法。B选项符合。