____has been a topic of continual geological research.A Did the continents originateB How did the continents originateC.Have the continents originatedD.How the continents originated

____has she been a nurse?____she graduated. ____has been a topic of continual geological research.A Did the continents originateB How did the continents originateC.Have the continents originatedD.How the continents originated tom ____has a bike. Many attend the conference,a brief report ____has been published.A of which B which The house I grew up ____has been taken down and replaced by an office building .a in it b.in c.in that d.in which 请求翻译和解析 ____has recently been done to provide more services and facilities,the residents still complain about the great difficulty in receiving medical health care.A.What B.That C.In spite of whatD.Though what C .D 区别 We have two spare rooms,____has been used for more than two months.A.but neither of which B.none of whichC.but neither of them D.none of them应该选那个选项?请说明一下理由.THANKS~ process-pick a topic Tom doesn't like fish.He ____has it.A often B seldom C never D BandC He ____has time for concert.A.hard B.hardly C.ever D.already 英语改句问题Stephen has got a brother ____ ____ ____has Stephen got? That art m ____has a large collection of early pictures and photographs.ti填什么 Each eye of a camel has three eyelids.同义句___of a____ ____has three eyelids. though we do not know what was discussed,yet we can feel the topic _____(a)a has been changed b was changedwhy a 1.--Good afternoon,Madam.______?--No,can you help me plaese?--Yes,Madam.What are you looking for?--I'd like to buy a needle.A.Are you waiting for meB.Would you like anything elseC.Have you been waited onD.What can I do for you2.____has taken away my 1、Mary has gone to the teacher's offic.____has JoanA、and B、neither C、so D、but2、Has the train____yet?A、got to B、reached C、arrived D、arrived at3、Have you ever____to Beijing?A、been B、gone第一题选C,第二题选C,第三题选 Recently,is it wise to make friends online has been a heated topic whether in or out campus.请问这句话存在哪些错误? ____has been announced,we shall have our final exams next month为什么用As,定语从句中什么情况下用As?