2013年高考英语二轮专题复习命题预测34
单项填空
21．_____ is known to us all that the 2012 Olympic Games will take place in London．
A．It B．Which C．As D．What
22．His opinion was such a good one _________ his family all agreed to accept．
A．which B．and C．that D．as
23．They are still very cautious about ________ side effect the new medicine will bring about, although the experts have tried it on about 2000 patients．
