Question

a. darn! i really thought i put my homework in my blue bag, but i put it in my gold bag, and i left the bag on my desk.
darn = interjection i = really = thought =
i = put = my = homework =
in = my = blue = bag =
but = i = put = it =
in = my = gold = bag =
and = i = left = the =
bag = on = my = desk =

Explanation:

Each word is classified by its part of speech based on standard English grammatical rules, matching its function in the sentence.

Answer:

Darn = interjection
I = pronoun
really = adverb
thought = verb
I = pronoun
put = verb
my = possessive adjective
homework = noun
in = preposition
my = possessive adjective
blue = adjective
bag = noun
but = conjunction
I = pronoun
put = verb
it = pronoun
in = preposition
my = possessive adjective
gold = adjective
bag = noun
and = conjunction
I = pronoun
left = verb
the = definite article
bag = noun
on = preposition
my = possessive adjective
desk = noun