你早就该让医生检查一下那个膝盖了！

It's ___high ___time you got that knee checked by a doctor!

我们公司早就该更新那些过时的软件了。

It's ___about ___time our company updated its outdated software.

你不觉得我们早就该搞清楚这个新系统到底怎么用了吗？

Don't you think it's ___about ___time we learned how this new system actually works?