1.Yourbonesareconstantlyreceivingandlosingcalcium,themineralthat-----themstrongandbreakresistant.2.Theprocessstartstoreverse,possibly----osteoporosis.3.------yourrisk,whileyouarestillyoung,makesureyourdietcontains-----calci

　　1.Yourbonesareconstantlyreceivingandlosingcalcium,themineralthat-----themstrongandbreakresistant.

　　2.Theprocessstartstoreverse,possibly----osteoporosis.

　　3.------yourrisk,whileyouarestillyoung,makesureyourdietcontains-----calcium

　　4.Youcanhaltorreversetheprogressionofosteoporosisatvirtually----stage

　　a.makesb.makec.makingd.tomake

　　a.resultisb.resultinginc.resultasd.toberesulting

　　a.aslowasb.itislowerc.lowersd.tolower

　　a.enoughb.sufficiencyc.adequatelyd.necessarily

　　a.theirb.thec.anyd.which