–Where are the students? How could they keep us waiting for so long?

–They started an hour ago and they ____ be here in fifteen minutes, I think.

A．can

B．would

C．should

D．must

患者，尿频量多，混浊如脂如膏，劳累后加重，口干舌燥，口渴易饥，舌红，脉细数。证属

A．膏淋
B．劳淋
C．尿浊
D．下消
E．以上均不是