______ our horizons of thinking, but it also saves us time and energy.

1. A.
   Not only does the Internet expand
2. B.
   Not only expands the Internet
3. C.
   Not only the Internet expands
4. D.
   Not only the Internet does expand

______ our horizons of thinking, but it also saves us time and energy.

      A. Not only does the Internet expand                 B. Not only expands the Internet

C. Not only the Internet expands                      D. Not only the Internet does expand

______ our horizons of thinking, but it also saves us time and energy.

A. Not only does the Internet expand                 B. Not only expands the Internet

C. Not only the Internet expands                       D. Not only the Internet does expand

______ our horizons of thinking, but it also saves us time and energy.

______ our horizons of thinking, but it also saves us time and energy.