It is何时不能缩写成 it’s

It is何时不能缩写成 it’s 强调句it is（was) .that/who,其中it is（was)能不能写成it's/it was不能缩写么? It was 可不可以缩写成 It's It is=It’s,There are能缩写吗? it is缩写 it was可以缩写成it's吗 it has been可以缩写成it's been it was 可以缩写成it's吗? It has 能缩写成It's吗? It was可以缩写成It's么? It has been的缩写 It’s been It is Tom 的缩写It’s Tom 这两者缩写后的发音是一样的 It is和It was是否都可以缩写为It`s