Many people have realized that we won't have any more clean water to drink unless something _____ to fight against pollution.A.was done B.will be done C.to be done D.is done

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• Many people have realized that we won't have any more clean water to drink unless something _____ to fight against pollution.A.was done B.will be done C.to be done D.is done
• Many people have realized that we won't have any more clean water to drink unless something _____ to fight against pollu
• More amd more people have realised we won't have cleaner water to drink unless something _____ soonA.was done B.will be done C.to be done D.is done请详细讲讲,另外,be done在这里是什么意思
• More and more people have realised we won't have cleaner water to drink unless somethine___________More and more people have realised we won't have cleaner water to drink unless somethine________soon.A.was done B.will be done C.to be done D.is done应怎么翻译,选哪一个,为什么?
• 选出意思相近的1.We clean our classoom every day.Our classoom ( ) every day.A.is cleaned B.are cleaned C.is cleaning D.are cleaning2.I went to the library and student math.l went to the library ( ) math.A.studied B.study C.studying D.to study
• 英语翻译