England is the largest of the four countries，and for convenience it        roughly       three zones.

England is the largest of the four countries，and for convenience it        roughly       three zones.

England is the largest of the four countries，and for convenience it        roughly       three zones.

1. A.
   divides；into
2. B.
   is divided；into
3. C.
   separates；from
4. D.
   is separated；from

England is the largest of the four countries and ________ it is divided roughly into three zones．

1. A.
   in convenience
2. B.
   with convenience
3. C.
   for convenience
4. D.
   at convenience