Those boys need to pull (their/there/they're) pants up!
their
He is a candidate (who/whom) is dependable.
who
(Among/Between) the two options, I liked the latter better.
Between
His speech had a positive (affect/effect) on me.
effect
Thomas is more excited about Disneyworld than Harry and (I/me).
me
Valerie is the driver (who/whom) reported the accident.
who
(Because of/Due to) the ice, school will be canceled today.
Because of
Most good (advise/advice) falls on deaf ears.
advice
Each student had (his/their/his or her) own lunch.
his or her
I do not know of (who/whom) you are speaking.
whom
It looks (like/as if) the plane will be delayed.
as if
I graciously (except/accept) your invitation, (except/accept) if Mary comes.
accept, except
You need to put the book in (it's/its) proper place.
its
Whom
I would prefer to (try and/try to) get my tire fixed today.
try to
He appears to be (alright/all right).
all right
Ashley and Winston baked the pie for (themselves/theirselves).
themselves
Give the ticket to (whomever/whoever) the group chooses.
whomever
Her hairdo is different (from/than) yours.
from
Use different from when a clause does not follow. Use different than when a clause does follow.
(Led/Lead) is toxic, so Peter cannot (led/lead) his team toward the mine without risking lives.
Lead, lead