AIDS is said to( have been)the biggest challenge to human over the past few year括号中的have been,语法书上说用完成时是指过去发生的事情,并且对现在有影响时才用,这句里的AIDS不是在上几年才发生的吗?对现在

Doctor Friedland said the study also shows there is no reason to punish AIDS patients and to force AIDS is said to have been the biggestALDS is said to have been the biggest health challenge to both men and women in that area over the past few years.为什么用to have been? 英语翻译AIDS is said____the number-one killer of both men and women over the past few years inthat region.A.beingB.to beC.to have beenD.having been在said附近有没有语法现象?为什么用完成时态? AIDS is said _______ the number one killer of both men and women over the past few years in the region.a.being b.to be c.to have been d.having been 请说下原因啊谢谢 AIDS is said to( have been)the biggest challenge to human over the past few year括号中的have been,语法书上说用完成时是指过去发生的事情,并且对现在有影响时才用,这句里的AIDS不是在上几年才发生的吗?对现在 一道英语情态动词用法题as teachers we should concern ourselves with what is said not what we think______A ought to be said B must say C hav to be said D need to say但是我想求详解顺便再问一个问题,做非谓语动词的时候, i hope our efforts( which is )to prevent AIDS 中which is 可省吗 This is said to me? 15.World AIDS Day is also important in reminding us that HIV has not gone away,and ______there are many thing still to be done.A.whichB.whatC.thatD./He said a lot,but I didn’t understand ______he said meant.A.all whatB.what allC.all thatD.that allT AIDS is said ___________  the biggest health challenge to both men and women in that area over the past few years.A  that  it  is     B to be  C  that it has been   D  to have been 英语翻译The full name of AIDS is Aquired Immunodeficiency Syndrome,while its abbrevation AIDS also means to help.Truly,tens of thousands of AIDS patients today face agitation,fear,pain.Only the strength of love and friendliness can drive soci 英语翻译‘If you look at the number of deaths,the tobacco problem in Asia is going to dwarf tuberculosis,it’s going to dwarf malaria and it’s going to dwarf AIDS,yet it’s being totally ignored,” said Judith Mackay,a British physician who 1 AIDS is said----the number-one killer of both men and women over the past few years in the region.A being B to be C to have been D having been2 The popularity of the film shows that the reviewers' fears were completely------.A unjustified B unjust 英语翻译Six Chinese out of ten say they dont want to work with people with AIDS.But one yong man said he would give all the help he could to them.he is a 25-yeai-old man from beijing.Wearing glasses,Li Dan looks like a student.He was,but he gave It is said ( )more than 68000 people have died of AIDS in China this year.A.which B./ C.that D.what I want u to hav my 一头雾水 Neither Tom nor I __been to the Great Wall.a.have b hav c.is d.was 一道专四英语题,请高人指点!急!Aids is said _ the number -one killer of both mem and women over the past few years in that region. A.being B.to be C.tn gave been D.having been 请说明选项并解释