although they plant trees in this area every year,the tops of some hills are still__.A.blank.B.vacant C.bare
问题描述:
although they plant trees in this area every year,the tops of some hills are still__.
A.blank.B.vacant C.bare
答
bare是光秃秃的意思,vacant是空的意思,blank是空白,根据句意是山光秃秃的意思