— Do you know where the headmaster is? I have something urgent.

— Oh, he ____ have gone far, for the computer is still on in the office.

[ ]

A. won't 　　　

B. mustn't 　　 　

C. can't 　　 　

D. wouldn't

目前我国内地和香港地区对房地产经纪业的行业管理主要采取( )这种模式。

A．行政与行业自律并行管理模式
B．行业自治模式
C．行政主管模式
D．行业自律模式