The control group patients regretted not having had stem cell injections．（）

A. Ounces of Water Needed Per Day 　　
B. Importance of Water 　　
C. Composition of Water 　　
D. Signs of Dehydration 　　
E. Supply of Water 　　
F. Necessity for Bringing a Bottle for Water with You

A.in your body
B.without water
C.before long
D.for a change
E.on a busy day
F.to your weight