Within industries，companies are always trying to develop products that are one step better than _____ of other companies．

A．one                       B．that                       C．those                     D．all

Within industries，companies are always trying to develop products that are one step better than _____ of other companies．

1. A.
   one
2. B.
   that
3. C.
   those
4. D.
   all

Within industries，companies are always trying to develop products that are one step better than ________ of other companies．

A．one                           B．that                     C．those                  D．it