食管癌病人有持续性胸背痛，多表示
C
暂无解析
Theaeroplane____shewastravelingwasdelayedforthreehoursatleast.
—Haveyoufinishedthework?
—Notyet,butnomatterhowharditis,we'llkeep___untilwemakeit.
Lastnighthesawtwodark_____enterthebuilding,andthentherewastheexplosion.
It’syourjob________thepopstars.
______hardworkitis!