How to make exclamations

What a wonderful day to see the mountains .....!

How stupid can I get! I ..... my keys in the door overnight.

For goodness sake stop ..... about the weather! It'll stop raining soon.

What on earth are you talking about? I can't make head or ..... of it.

How nice of you to come all this ..... just to wish me a happy birthday.

What a disaster! I don't believe anything else could go ..... now.

Wow! You've certainly made a good ..... of decorating this room.

Well blow me down! I just can't believe I've actually ..... my exam.

You could have knocked me down with a feather! You mean to say he's ..... cleaned my car.

I'll go to the foot of my stairs! It must be at ..... 20 years since we last met.