I Lay

[Zero]

Both are /not/ correct. Only "I" is correct in that sentence.
If you were trying to say "the sky was I" it would be incorrect it would have to be the "sky was me".

I'm confused as ever, if the "I" was correct, then isn't "The sky was lonely as I" correct? As you have said, the inferred verb "was" is there, so it forms into, "The sky was lonely as I was"?

Also, there is another point I want to be clarified on though, Stanza 2 Line 3

All efforts to do so was futile

I am rather confused in the subject verb agreement of this, so I ended up using "was", should it be "were"?
I say "All it took was four screws" but likewise, it can also be said, "All it took were four screws". Alternatively, we can also say, "four screws was all it took".

@milo, is the content of the poem not good enough?