气滞血瘀型痛经的首选方是（）

A.调肝汤

B.膈下逐瘀汤

C.少腹逐瘀汤

D.桃红四物汤

E.通窍活血汤

He________go to bed_______he finished his homework.

A．doesn’t; until

B．doesn’t; and

C．didn’t; until

D．didn’t; for