—I don’t know if Dr. White _______ to the party next week?

—I think he will come if he ________ free.

A．comes; will be

B．will come; will be

C．comes; is

D．will come; is

下列关于编辑框的说法中，正确的是（ ）。

A．页标头和页注脚带区

B．页标头、细节和页注脚带区

C．标题、细节和总结带区

D．标题、页标头、细节、页注脚和总结带区