_______ , I’ll wait for you to have dinner together．Be back as early as possible．

A．However late it is                               B．No matter how it is late

C．However it is late                               D．No matter how late is it

（2010·北京八十中学高三9月月考）     22．_______ , I’ll wait for you to have dinner together. Be back as early as possible.

A. However late it is            B. No matter how it is late  

C. However it is late            D. No matter how late is it