Doing exercise -- a difference -- your health

Doing exercise __ a difference __ your health
A.takes,to B.makes ,on
C.makes,to D.takes ,on
How __he often stays up ,sometimes __2:00a.m
A.fast,at B.late,until
C.soon,after D.long in
It __ be red but I'm not sure.
A.must B.have to.C.might.D./
__ to bed early ,or you'll get up late
A.TO go B.Go C.Goes D.Going