Have you ever been to Shanghai?Yes,I （）there for three days last month.为什么选have been

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• Did you have wonderful time at the party?Yes,it's?one I’ve ever been to before.选什么?
• --Have you ever been to Canada?--Yes,I____ there with my parents last year.
• Have you ever visited the Water Cube?Yes.When I served as a volunteerin Beijing,I it twiceA.have visited B.visited C.had visited D.had been visiting为什么不选C
• --Where did you go the day before yesterday?--I( ——)Shanghai for two days.A have been inB had been in究竟应该选哪一个,给出原因.参考书上说的是B，我也闹不清楚了。
• 1.the man at last ---- and handed over all the money he had stolen.A.give in B.gave away C.gave out D.gave to理解不了,为什么不是A?2.we all insisted that we ---until we finished the work.A.would not rest B.didn't rest 能不能选A,理解作 我们坚持在完工前不休息3-I guess it must be pretty hot in * in summer,isn't it?-Yes.That's why we ___to Beijing.But we didn't know it____so cold here in winter.a.are moving;was b.moved;would be c.have moved;is d.were moving ;has been能不能选c,把
• 几道英语选择题,--（ ） I visit Lucy on Sunday,Mom?--Yes,you ( ).A.Must can B.May be C.Need need D.May need--Not only we but also she ( ) been to the Great Wall before.A.has never B.has ever C,have ever D.have everI like writing my original sentences( )the grammer I have learned.A.used B.use C.to use D.using第一个题目选B,为什么?第二个题目选A,为什么不选B,好像也可以?第三个题目选D.我想知道的是这个句子的结构成分,"using the grammer',在句子充当什么成分?答得好有奖励哦.呵呵.
• 1,--Today,are you free now I have a favor to ask of you.--_____A It is a pleasure B Go ahead C Help yourself D Ask,please2,Had it been at all possible I would have gone to visit him in the hospital,but I ___fully occupied the whole of last week.A am B was C have been D were 3,It was already past midnight and only three young men ___ in the tea house.A left B remained C delayed D deserted 第一题为什么不选D,ask of 怎么理解第二题中的Had it been at all possible 怎么理解 做什么成分
• 1 The house ______roof was damaged has now been reoaired.A which B whose Cthat AC为什么不行?2 The duty of Project Hope is to help oppr children,isn't it?Yes,it has built many schools ______those children can study happily.A where B thatB为什么不行?3 Last summer I when to lu xin’s hometown and visited he house ______he was born.A that B which C whereAB为什么不行?4 May I have a glass of beer ,please?Beer?Sorry ,there’s _______left,but would you like some juice instead
• where have you__these days?-I have__to Dalian with ma family.where have you__these days?-I have__to Dalian with ma family.A.been,gone B.been,bee C.gone,been D.gone,gone应该选哪个?为什么这么选?这里的been和gone是什么意思?强调的是什么?
• be的过去分词been的问题I have been very busy the last few days与I have always been in love with you.这俩句话have been后面跟的不是现在完成进行时(have been doing)的结构,也不是现在完成时（have been done)的结构.而且动词不定式的完成时也是（to have been made）.那么这俩句话have been后面跟的却是busy和love的原型.为什么会有have been+动词原形的结构?如果就是单纯的把be变成been的话,那么请问它在我们学习的那一个知识点中呢?
• 无论m为何实数，二次函数y=x2-（2-m）x+m的图象总是过定点_．
• 解方程组①ax+5y=15,②4x-by=12时在解方程组 {ax+5y=15 4x-by=-2时,由于粗心,甲看错了方程组中的a,而得解为 {x= -13 y=-1,乙看错了方程组中的b,而得解为 {x=5y=4．（1）甲把a看成了什么,乙把b看成了什么?（2）求出原方程组的正确解．