Two independent clauses connected by no punctuation
a fused sentence
You may care what grade you get in this class, but I (don't, do'nt)
don't
Janel teaches yoga on (Monday, monday) afternoons.
Monday
It was hard for all of us to (except/accept) that our favorite who was being cancelled.
Accept
I was going to ask her on a date, but it was (to, too) late.
too
Two independent clauses joined by a comma
a comma splice
(Jane's, Janes') house is beautiful, but it is always messy.
Jane's
I can't stand my (History, history) class, but I really enjoy (Biology 221, biology 221).
history, Biology 221
I love my dog, but his fur is quite (coarse, course).
Coarse
I want to be friends with Ben and Jake, but my mom says (their, they're) trouble.
they're
A comma rule that is used when a sentence indicates that the speaker is addressing someone directly.
direct address
The (Erickson's, Ericksons') dog is so fluffy and cute.
Ericksons'
My favorite season is (Winter, winter).
winter
School can be difficult, but I am determined to (farther, further) my education.
further
She wasn't proud of sneaking out, but it was better (then, than) sitting through another boring lecture.
than
Where do the commas go in this sentence?
On May 4 1978 a baby was born in Bend Oregon and she grew to be a powerful woman.
On May 4, 1978, a baby was born in Bend, Oregon, and she grew to be a powerful woman.
(Jen and Ella's, Jen's and Ella's) doll has red, curly hair.
Jen and Ella's
My sister is finally (cancer, Cancer) free!
cancer
During our field trip, we walked right (past, passed) the (capital/capitol) building to get to the museum.
past, capitol
"That tie really (compliments, complements) your khakis nicely," she said.
complements
Where do the commas go in this sentence?
She ordered the burger and he ordered the salad but they both got huge milkshakes.
She ordered the burger, and he ordered the salad, but they both got huge milkshakes.
(Joe and Anne's, Joe's and Anne's) costumes are the best ones at this party.
Joe's and Anne's
I used to see (Doctor, doctor) Jones, but now I have to see another (Doctor, doctor).
Doctor, doctor
(Who/Whom) is the best cook in the family?
Who
I am the most mature person in my friend group, so my friends are always coming to me for (advise, advice)
advice