The head of the company promised to deal with matters of this sort _______ he returned to his office.

［2011安庆高三检测］

A. until                                                     B. while

C. by the time                                           D. the moment

The head of the company promised to deal with matters of this sort _____he returned to his office．

    A．until        B．while        C．by the time      D．the moment

The head of the company promised to deal with matters of this sort ________ he returned to his office．

1. A.
   until
2. B.
   while
3. C.
   by the time
4. D.
   the moment

The head of the company promised to deal with matters of this sort _____he returned to his office．