宜选何方

A．附子理中汤加减

B．黄芪建中汤加减

C．少腹逐瘀汤加减

D．良附丸合正气天香散加减

E．香苏散合良附丸加减

— When did you _____ to do the work? 

— Two months ago, we are through 80% of it at the moment. [ ]

A. set off

B. set out

C. set up

D. set about