来自邱清盈的问题
Bears______fat(脂肪)storesthroughoutthesummerandfalltohaveenergyBears______fat(脂肪)storesthroughoutthesummerandfalltohaveenergyenoughtolastthemthroughtheirwintersleep.A.packupB.buildupC.bringupD.takeup请解
Bears______fat(脂肪)storesthroughoutthesummerandfalltohaveenergy
Bears______fat(脂肪)storesthroughoutthesummerandfalltohaveenergyenoughtolastthemthroughtheirwintersleep.
A.packupB.buildupC.bringupD.takeup
请解释每一个选项.
