Question

b、bob suddenly tripped, and he fell on the sidewalk. gosh! i hope he has a small bruise or a little cut and not a serious injury.
bob = noun\tsuddenly =\ttripped =\tand =
he =\tfell =\ton =\tthe =
sidewalk =\tgosh =\ti =\thope =
he =\thas =\ta =\tsmall =
bruise =\tor =\ta =\tlittle =

Explanation:

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

Answer:

Bob = noun
suddenly = adverb
tripped = verb
and = conjunction
he = pronoun
fell = verb
on = preposition
the = article (definite article)
sidewalk = noun
Gosh = interjection
I = pronoun
hope = verb
he = pronoun
has = verb
a = article (indefinite article)
small = adjective
bruise = noun
or = conjunction
a = article (indefinite article)
little = adjective