【2012北京卷】24. Jerry did not regret giving the comment but felt ______ he could have expressed it differently.
A. why B. how C. that D. whether
24. C。从句考查，宾语从句不缺少成分用that引导。
【2012江西卷】25．It suddenly occurred to him he had left his keys in the office.
A．whether B．where C．which D．that
25答案：D 考点：考察名词性从句当中的主语从句。
