It was能缩写为It's吗?但Hao was your vacation?It's boring.却缩写了?要有原因

It was能缩写为It's吗?但Hao was your vacation?It's boring.却缩写了?要有原因 It was 可缩写为It's it was可以缩写为 it's吗?看到很多书都写it was,不写it's,什么原因呢? it was 可以缩写成it's吗? it was可以缩写成it's吗 it’s 可以理解成it was的缩写吗? It was 可不可以缩写成 It's It is和It was是否都可以缩写为It`s It is=It’s,There are能缩写吗? 请问It was 和 It has 可以缩写成It's吗? 请问：He/She/It was能缩写成He's/She's/It's吗?He was not...能缩写成 He wasn't...但是能不能写成 He's not... What day was it yesterday?能直接回答Monday,不加It 那能用缩写It's Monday 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? I would,You would能缩写吗?如：It is=It's it was可以缩写成it's吗如题要有依据老了不死,请问it has 不可以所写成it's吗 表示星期的英语单词在句子中能缩写吗如 It's Wednesday.能写成It's Wed.. BE动词过去式可以缩写吗比如 IT WAS 可以写成 IT’S 那个，有什么参考资料吗？ It was可以缩写成It's么?How was your birthday party?A.It's a nice night B.We were very happy C.It's great.为什么是C不是B?