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.
That's my dictionary.
- That is my dictionary.
That's a useful piece of information.
- That is a useful piece of information.
... has a tough one ...
... But the key point I think is video has to be delivered. ...