Weworktogethertoachi的精選

問題詳情：單項填空，從A、B、C、D四個選項中，選出可以填入空白處的最佳選項Weworktogethertoachieveourcommonpurpose:_______worldthatissafer,cleanerandhealthierthan_______onewearelivingin.   A.the;/     ...