I told your friends how to get to the hotel, but perhaps I ____have driven her there.

A．could

B．must

C．might

D．should.

肺结核化学治疗的原则是（）

A.杀菌、灭菌、早期、全程、联合

B.灭菌、全程、适量、联合

C.早期气、规律、全程、适量、联合

D.杀菌、早期、规律

E.全程、适量、联合