Question

complete the rhyme scheme.
a b b c c
sometimes the mist overhangs my path,
and blackening clouds about me cling;
but, oh, i have a magic way
to turn the gloom to cheerful day--
i softly sing.
from james weldon johnson, \the gift to sing\

Explanation:

Rhyming words are identified. "Path" and "cling" don't rhyme. "Cling" and "way" don't rhyme. "Way" and "day" rhyme (so they get the same letter). "Day" and "sing" don't rhyme.

Answer:

A, B, B, C, C