Question

Plz answer, this is very urgent . 'HOW BAD DAY IT WAS !'

in this sentence which one is the subject and which one is the predicate?

Answer 1

How bad - predicate
Day it was - subject
Note : its not necessary that a senctence starts from subject only . In many cases it starts from predicate too.
Hope it helps

Answer 2

Thanks for the question

∅ How bad day it was?

Subject : How bad

Predicate : Day it was

However, One exception is there.

The subject of a sentence usually comes first,  but occasionally it is put after the predicate.

$\boxed{Mr.Perfect}$