The conference will begin in an hour;_______, let’s have a rest.

1. A.
   on the meantime
2. B.
   in the meantimes
3. C.
   in the meantime
4. D.
   in meanwhile

The conference will begin in an hour;_______, let’s have a rest.

A. on the meantime                B. in the meantimes 

C. in the meantime                     D. in meanwhile

The conference will begin in an hour;_______, let’s have a rest.