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1.No one will accept your requirement that the work __by fiv

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1.No one will accept your requirement that the work __by five o'clock
A.be finished B.should finish C.will be finished D.is finished
2.In our childhood,we were often __by Grandma to pay attention to our table manners.
A.demanded B.reninded C.allowed D.hoped
3.___such heavy pollution,it may be too late to clan up the river.
A.Having suffered B.SufferingC.To sufer D.Suffered
解释一下错的选项为什么错
3选a
1.that引导的同位语从句修饰requirement,从句中谓语动词用should加上动词原形,should可省略.work被完成,所以选A,(should)be finished.
相同的用法还有名词:advice,demand,order,decision,proposal,suggestion,request,plan...这些名词后的主语从句和表语从句也要用should加上动词原形.
2.A选项demand的搭配:demand to do; demand that...,demand of sb.to do sth.不能说demand sb.to do sth.
D选项hope的搭配:hope to do; hope that; hope for...不能说hope sb.to do sth.可以说wish sb.to do sth.
C选项意思不对.
3.A选项现在分词的完成式,强调其动作发生于句子动作之前,这个题目里,污染还是继续存在的,并没有在谓语动词之前结束.故排除.
C选项不定式做状语表目的或结果,不符合题意.
D选项过去分词表示被动,不正确.