This river forms a natural _______ between China and Korea.
A
暂无解析
Wedonothavea_______schoolinourinstitute.ThehighestdegreeweprovideforthestudentsisaB.A.andaB.S..
Thismorningintheclass,ourteacherlosthis______atlastbecausehecouldnotstandanymore.
Healwayshasalotof_______ideasinhismind,andsometimeswedonotevenknowwhatheisthindingabout.