it's high time__about the traffic problem答案是something was done.说是虚拟语气.怎么理解?虚拟语气的哪个语法呢?

It's 56 metres high.对56 metres high It's high time...的用法 it's high time的用法? It’s (about/high)time+that: 请问it's high time 的用法 it's high time that怎么翻译 英语：it's high time是什么意思?详细! it's high time that the fighting it's high time that sb were还是was It's more than fore hundred metres high!翻译 It's high time that he stopped smoking?翻译 It's high time for sb.to do sth. Dear,it's high time thati forget you It's very hot today .The t___is very high. it's high time you__(give)up smoking. 1 The old tower looks nice ,it’s about____.A twelve-metres-high B twelve-metres high Ctwelve meters high 2 The old tower looks nice,it’s about__.A twelve-metres-high Btwelve-metres high C twelve metres high It' s time that和 It‘s high time that 区别?