传统组织设计的原则主要包括（）。

A．目标原则

B．弹性设计原则

C．职责原则

D．专业化原则

E．整分合原则

— 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