21．He comes from either No．45 or No．46 middle school, I can't remember __ .
A．which B．there C．where D．that
22．You'll find this map of great__ ．in helping you to get round Bejing
A．price B．cost C．value D．useness
23．The Olympic Games, ．in 776 BC ,did not include women players until 1912
A．first playing B．first played
C．first being played D．to be first playing
