professor wang _____for his informative lecture,was warmly received by his studentsa knowing b known c to be known d having known考察什么语法选什么为什么

问题描述:

professor wang _____for his informative lecture,was warmly received by his students
a knowing b known c to be known d having known
考察什么语法
选什么
为什么

选B.
A表示主动,不对;C不定式表示将来,时态不对;D也是表示主动,不对