Visitors have been asked to keep the woods clean and tidy.请问中间为什么用have been asked

初中英语The student _their classroom whThe student _their classroom when the visitors arrived.A.have cleaned B.had cleaned C.was cleaned D.have been cleaned 一道状语从句选择题There have been ten thousand visitors to the exhibition since( ).A.its opening B.it's openingC.it opens D.one month Visitors have been asked to keep the woods clean and tidy.请问中间为什么用have been asked Visitors have been asked to keep the woods clean ad tidy汉语的意思 1.--- Did you tidy your room?--- No,I was going to tidy my room but I ______ visitors.A.had B.have C.have had D.will have我选C2.In recent years many football clubs ______as business to make a profit.A.have run B.have been run C had been run D.will As to whether the visitors to heritage sites are ……有谁帮我翻译一下As to whether the visitors to heritage sites are getting much of a visitor experience once photos have been taken is another interesting question as the proportion of tour 英语..时态语态..1.I （C）there little more than a week when I set to work with the scientist.A.would be B.have been C.had been D.will be 为什么啊..2.--Did you tidy your room?--No,I was going to tidy my room but I(A)visitors.A.had B.have C 选哪个 .C.D 纠结The visitors are very ______ to see so many changes _______ in Shenzhen since 1979.A.surprise; have been taken place B.surprising,took place C.surprised,have been taken place D.surprised,have taken place I have been a person . Let's have a big h___ for visitors to stay in our town Visitors to the country have beenasked to fill in a deatailed q---首字母填空 ____your mother____there?A.have;been B.have;been to C.has;been Dhas;been to 1.___ my phone anywhere?No,it is sure to turn up before long.A.Have you seen B will you see C.Do you see 2.Why didn‘t you go to the school meeting Becasue I —— to go and organised something for the visitors.A.was told B.have been told选哪个 新概念问题：1.Visitors have been asked to keep the woods clean and tidy.请问这是现在完成时态吗?主语+have+动词过去分词 为什么这里面有两个过去分词?been asked? The students ____________ a biology class when the visitors came.A.werehaving B.are having C.will have D.had where _ he he_to the library.A have been,went B have been ,have been C has been,went继续上面的“D has been,has been 英语翻译1.My father is a strong( ) for college education reform.2.Since you lost your job,you have no other( ) but to accept his kindness.3.Mary has always been( ) about dancing since she was a little girl.4.The town( ) the number of visitors at In spite of all that has been said,为什么用has新概念2的58课,为什么用has而不是have原文是　　The tiny village of Frinley is said to possess a 'cursed tree'.Because the tree was mentioned in a newspaper,the number of visitors to Fri