--- Where is Jack?

--- He _________ football on the playground with those AFS students, but I am not sure.

A．must be playing

B．must have played

C．may be playing

D．may have played

有关东南亚气候类型分布的叙述，正确的是[ ]

A．中南半岛以热带季风气候为主

B．马来群岛均为热带雨林气候

C．在一些山地的背风坡，有面积较大的热带沙漠气候分布

D．中南半岛的北部为亚热带季风气候