第一节：单项填空(共15小题，每小题1分，满分15分)
21．He is ______ as a leader but he hasn’t _____in teaching．
A．success，many experience B．a success，much experience
C．success，an experience D．Success，a lot of experiences
22．It was only when I heard the story ______it was true．
A．did I realize B．that I realized
C．then I realized D．had I realize
