—As—has been announced,we shall have our exams next week.空格里为什么用as,不用it?

as has been mentioned above... —As—has been announced,we shall have our exams next week.空格里为什么用as,不用it? 英语翻译China’s process has been seething along—apparently for about as long,and with about as much vitriol—as the American electoral campaigns were. This has been flagged as spam翻译 This message has been reported as SPAM. as has been stated中文意思 as has been report是什么意思呢 why?Chinese music has not______the same as before.There have been lots of changes in it sincewhy?Chinese music has not______the same as before.There have been lots of changes in it since 1980.A.been remained B.remained C.been changed D.changed—What 高考英语,一道单选Laiwu has——the main area of steel and iron making in China since the 1990s.A.been known as,B.been famous for,C.become known to,D.been famous in, she has been----- abroad 3 yearsa.as early as b,as soon as c.as long as 英语翻译Telecommuting—substituting the computer for the trip to the job—has been welcomed as a solution to all kinds of problems related to office work. This post has been saved as a draft. 什么意思? 英译中Has been assessed as having fulilled the following requirements ...has been seen as...这个句型怎么用? has been a和work as的区别 Beijing,has been known as an ancient city. English has been notorious as a word borrower什么意思 请问As has been mentioned above和As have been mentioned above以及As is mentioned above 有什么区别?