关于Wemustdowhateverweca的百科

•  Wemustdowhateverwecanto

• 问题详情： Wemustdowhateverwecanto________theriverfrombeingpollutedanymore.A.separate      B.keep          C.prevent       D.guard【回答】 C。keep…from和prevent…from都有“阻止……做某事”的意思，但“keep…from”中的from不能省略...
• 2021-04-1129349