英语：情态动词改被动1.We should water the flowers twice a week改：The fl
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1.We should water the flowers twice a week改：The flowers should be watered by us twice a week.（should是情态动词,后面要加动词原形,wereareiswasam等的原型都是be.2.You may keep thebook for a week__the book may be kept for a week.______________________________3.They must finish thier homewrok on time.___their homework must be finished on time._____________________________4.You shuould tell them a ture story＿＿they should be told a true sotry.a true story should be told to them
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