1. Do you have any idea ___is actually going on in the classroom? (2005 辽宁)
A. that B. what C. as D. which
分析:B idea后边经常接同位语从句。连词视从句意思有所不同。因为从句缺少主语,因此用what.其余常见的接同位语从句的名词还有:fact ,belief,,news,idea,truth,hope,problem,information,promise,hope,message,possibility,chance等。