Interchange of Exclamatory and Assertive Sentences

1. How sweet the moonlight sleeps upon this bank!
The moonlight very sweetly sleeps upon this bank.
2. If only I were young again!
I wish I were young again.
3. Alas that youth should pass away!
It is sad to think that youth should pass away.
4. How beautiful is night!
Night is very beautiful.
5. To think of our meeting here!
[Or] That we should meet here !
It is strange that we should meet here.