it has been +长度时间+ since+主语+谓语+宾语这里的谓语是过去式还是过去分词?

It's has been accepted it's always been you(It has always been it has been可以缩写成it's been it's been.的全称是不是 it has been... it has been +长度时间+ since+主语+谓语+宾语这里的谓语是过去式还是过去分词? It's no use regretting what has been done. It`s been a pleasure to talk to you.中 It`s 是It has 还是It is? john____ it for two hours,and he`s still watching now 1.has been 2.watching 3.has been watching it's been has been 麻烦告诉一下 been 的语法,一般用在哪里?怎么用? it has been since.用法 It has been in my it is/has been= it has long been assumed It's a long time since还是It has been a long time since It's hot .The temperature___35 degrees A has been raised at B has risen to C has been risen forD has raised 答案为什么是B?raise at It's been a pleasure knowing you.那个’s是has还是is还是was? It's been awhile. it's been coverd..