为什么空里填built 而不是having been built呀during the tourist season ,there are many people wandering in this city to see the old castles ________in the sixteenth century

为什么空里填built 而不是having been built呀during the tourist season ,there are many people wandering in this city to see the old castles ________in the sixteenth century the new school library_____over there now will be put into use next term为什么填being built 而不是built?没有now就可以了是不 it is reported that a new house _ _ ( build )at present in the disaster area为什么答案是 is been built?而不是 is being built be动词的过去式加动词的过去分词为什么构成了一般过去时?e.g:The Great Wall was built long ago（而不是built）是表示被动么?还是什么? The first computer was built in USA.为什么是用built而不是building? built to last 短语为什么不是built to the last Both my parents are medium built其中 medium built 为什么? a new gymnasium is being built in our neighborhood is being built 为什么不用built为什么不用is built groove coverage 的 she前两句的词She hangs out every day near by the beach Havin’ a harnican fallin’ asleep这其中havin'和fallin'是什么写法?并且havin这个单词也查不到什么意思.为什么整首歌只有这个地方用现在 I Know it is hard to make such a decision _______ he has just built up the team for a yearand the project is going in the important stage now.为什么选as而不是when 为什么the house that built me的歌词里面是play guitar而不是play the guitar?Play后面+乐器不是要The 什么情况下不要 或者这个错了（对于欧美音乐不敢太深质疑） ___that it was going to rain,he hurried home.A.to see B.seen C.seeing D.havin seen答案是选C,请问为什么D不对, He said a new hospital ( ) in two weeks.a.will be built b.would be built c.had built d.was built答案是什么,又是为什么呢? A new shopping mall____near my home in five years.A.has been built B.is built C.was built D.will be built 选哪个为什么 The entertainment building being built will be completed next year.为什么填being built? there are some temples built up in 1980为什么不是“are built up“或是“builds up” had to be built.built不是v吗?为什么在be后 为什么要叫山市 而不是海市蜃楼