how (wonderful etc) · what (a great idea etc) · however (difficult it may be etc) · (in interrogative sentences) how (much etc) · to what extent

What a lucky person he is!

You don't know how much I love you.

What a splendid dinner!

Christmas is so close now.

And I know you didn't do this just to win an election. And I know you didn't do it for me. You did it because you understand the enormity of the task that lies ahead. For even as we celebrate tonight, we know the challenges that tomorrow will bring are the greatest of our lifetime: two wars, a planet in peril, the worst financial crisis in a century.