All the task __________ ahead of time, so they decided to go on holiday for a week.

A．having finished

B．had finished

C．having been finished

D．had been finished

半夏白术天麻汤的功用有（）

A.熄风止痉

B.柔肝熄风

C.凉肝熄风

D.平肝熄风

E.熄风通络