— Can you explain ____ you have been late for school several times this term?

— Sorry, but it is the first time that I have been late this week.

A．why it is that

B．how it is that

C．why is it that

D．how is it that

[解析] 男：等我忙完手头的工作，我就带你去欧洲散散心。 女：算了吧，我还不知道你，等你出国还不知猴年马月呢! 问：女的是什么语气？（）

A．高兴 

B．不满 

C．生气 

D．惊讶