I've managed to find the solution to the problem that's been bugging me all day.
This is the best thing that's ever happened to me.
- This is the best thing that has ever happened to me.
You're the best thing that's ever happened to me.
- You are the best thing that has ever happened to me!
That's the book I've been looking for.
... of news which you didn't really know has happened. ...
... of the biggest exchange network the world has ever seen. ...