Take exercise every day, ________ you will become strong and healthy.

1. A.
   or
2. B.
   and
3. C.
   but
4. D.
   while

Take exercise every day, _______ you'll become stronger and healthier.

1. A.
   or
2. B.
   and
3. C.
   but
4. D.
   while

Take exercise every day， _______you'll become stronger and healthier．

A．or          B．and          C．but                D．so