For some reason, people are quick to find the
error in you
all,
but they miss it in we all.
We
is a plural pronoun and already includes everyone,
so it is redundant to add the all part.
Simply say we
or all of us
or everyone
(but mind the next error).
EVERYONE-HIS/HER:
Too many people make a
Pronoun Agreement
error by using their
to refer back to "everyone"
(or another indefinite PN which takes a singular
antecedent).
Use a different subject or
plural noun.
PRONOUN REFERENCE/AGREEMENT:
Pronouns replace nouns; thus,
Pronouns must agree in number with the noun they replace.
That is,
you need a singular
Pronoun to match/refer back to a singular noun,
and
you need a plural
Pronoun to refer back to a plural noun.
Sounds simple, but it gets tricky with the Indefinite Pronouns.
Most of these take a singular pronoun,
even though it seems that it should be a plural pronoun.