-Thesebooksaretooheavyformetocarry.A.YoumayaskforhelpB.I'llgiveyouahandC.I'lldoyo
-Thesebooksaretooheavyformetocarry.-____.A.YoumayaskforhelpB.I'llgiveyouahandC.I'lldoyouafavourD.I'dcometohelp选B?
为什么、