1928年11月22日，国际展览局召开会议，来自个（）国家的代表参加会议，签订了《国际展览会公约》。
A.10
B.21
C.31
D.32
参考答案：C
根据句意及首字母提示完成句子。
1. —Where's your friend?
—She's sitting b______ here deskmate.
2. That musician has w______ many songs.
3. —Has your father been a______?
—Yes. He has been to many countries.
4. Zhang Ziyi is very famous. He Meifeng has always wanted to m______ her!
5. How many tickets can you buy if they are all s______ out?
对于二手房个人住房贷款，商业银行最主要的合作单位是( )。
A．保险公司
B．房产经纪公司
C．房地产开发商
D．房屋产权交易所
