The book can_________for a week.A.keep B.kept C.is keep D.be

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The book can_________for a week.A.keep B.kept C.is keep D.be kept
More than two schools_______in the city next year.A.are built B.were built C.have built D.will be built
when_____the car_____?----- In 1885
A.did;invent B.was;invented C.does;invent D.is;invented

标题选D be+过去分词表被动 ,can后面加动词原形所以是 be kept 那本书可以保留一周
第二题选D 同样是被动语态（学校是被建造出来的）,但题中有next year,所以用将来时will be ,明天这座城市将有超过2个学校被修建
第三题B 同样是被动语态,但是由in 1885可知是过去时,汽车是什么时候被发明的
可知这三道题都是考的被动语态（be+过去分词）,但同时要根据句子的时态来做一定的整合
再问：为什么第一道题不是直接用B
再答：应为can是情态动词（情态动词是一种本身有一定的词义，但要与动词原形及其被动语态一起使用，给谓语动词增添情态色彩，表示说话人对有关行为或事物的态度和看法，认为其可能、应该或必要等。情态动词后面加动词原形。）所以can的用法是can+动词原形，而被动语态是be（be动词包括am、is、are，而am、is、are的原形是be）+过去分词，所以两者结合在一起就是can be kept

The book can_________for a week.A.keep B.kept C.is keep D.be food fresh in the fridge.a is keep b is kept c is keeping d Our room must ___ clean.A.keep B.be kept C.to be D.kept He made the fire_____warm in winter.A.keep B.keeps C.kept D. Don't __ the rules next time! A : keep B : kept C : break D ___can I keep the book?A week. Woolen clothes are used for _ warm.A.kept B.keep C.to keep D ( )3.cats is my hobby.A.Keep B.Keeping C.Keeps D.Keep the I want to _this book for a week .A,borrow B,keep C,lend.选择,为 You should _____ quiet in the library.A、keep B、keeps C、kept单 My uncle likes ___ some animals at home.A.keep B.kept C.keep how long can I ___ the book?A lend B borrow C get D keep 为何选