Decisionmakersmusthavesomewayofdeterminingofseveralalternativesisbest.（）
A、thatD
暂无解析
_______(safe)needstobeimprovedontherailwaysinthatcountry
It is essential that everything in advance.（）
The teacher required that all errors should be _______eliminated before the students turn in their term paper
TheUnitedStatesisacountry_(advance)inscienceandtechnology
The sad condition of women working as house servants around the world received much media_____early this yea
