It has been found that pleasant music keeps people from becoming tired at their work.求译为什么这句话我不能理解成【研究表明，愉快的音乐可以使人们在工作的时候保持疲劳】

a debugger has been found running inA debugger has been found running in your system please unload it from memory and restar t your program是什么意思 a debugger has been found running in your system.please,unload it from memo 英语翻译Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and th 英语翻译We hereby certify that material covered by this report has been inspected in accordance with ,and has been found to meet ,the application requirements described herein ,including any specifications forming a part of the description and th 11.THE DOG__IN TERRIBLE CONDITION WHEN WE FOUND IT.' A:IS B:HAS BEEN C:WOULD BE D:WAS It has been found that some ————(种类）of oil are really bad. It has found that the highest scores on vocabulary tests have been made by people getting the highest pay.为什么用了两个现在完成时?has found 和have been made 请解释一下这个句子的时态问题It has found that the highest scores on vocabulary tests have been made by people getting the highest pay.为什么用了两个现在完成时?has found 和have been made it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed When _____the Party___?A.was ;founded B.has been found c.IS;FOUND d.was;found It is reported that the wounded _____ been treated and the lost _____ been found.A.have…have B.has…has C.have…has D.has…have Lots of astronauts ________(has/have) been to the space station .They found it very interesting.why?请说明，has和have有什么区别？ It has been required that our monitor ___our homework before 6 O' clock.A hand out B hands out C has handed out D had handed out Nowhere else in the world __this kind of animal ___in past few years A had ..been found B was...found C has...found D has the key,___ he lost ,has been found