Worst of all, I forgot my homework in my locker.
To quote from Charles Dickens' A Tale Of Two Cities: 'It was the best of times, it was the worst of times....' So obviously 'It' can start a sentence.
worst sentencethe worst sentence is I'm pregnant!
you are the worst cook in the world i have the worst headache i have ever had
No.
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Yes, I can start a sentence with "Is."
You definetly can in a German sentence! That was the worst bratwurst I have ever eaten.
The devil is the worst archenemy
In the month of January, the frigid weather was at its worst.
Yes, you can start a sentence with a verb.
Yes, you can start a sentence with an acronym.
"Worst" is an adjective. it can also be a noun, adverb and a transitive verb, depending on the sentence structure in which the word is used.