Rewrite the sentences so that their meaning stays the same

V. Rewrite the sentences so that their meaning stays the same.

     1.  Michael is faster than his brother.

          Micheal’s brother ......................................

     2.  The winter is the coldest season.

          No season ......................................

     3.  Our sources of energy will soon run out if we don’t try to save them.

          Unless .......................................................................................................

     4.  Nick doesn’t go to school every morning, but Mary does.

          Mary ..................................

     5.  What an interesting story!

          How .......................................................................................................!