The adverb in the sentence is, Completely.
It was the deadliest storm of all time
I was writing a story.
I have written poems.
I have been writing a novel.
I had written a song.
<span>I had been written up for fighting.
</span>
The last one is sort of weird, since you can't say "I had been written" in the sense of the verb "write" as it would be grammatically incorrect.
Is it a multiple choice question?