At the shopping centre, she didn’t know what _____ and ______ with an empty bag.

A．to buy, left

B．to buy, leave

C．to be bought, left

D．was to buy, leave

治疗绝经妇女骨质疏松症脾肾两虚证，应首选的方剂是（）

A.左归丸

B.大补元煎

C.二仙汤

D.知柏地黄丸

E.六味地黄丸