Commas

Ginny, Marshall, Steve, and Fran, went camping last weekend.

Ginny, Marshall, Steve, and Fran went camping last weekend.

Ginny, Marshall, Steve and Fran went camping last weekend.

My friends and I rented a movie, popped popcorn, and baked cookies last night.

My friends and I rented a movie popped popcorn, and baked cookies last night.

My friends and I rented a movie, popped popcorn and baked cookies last night.

Don't forget to bring a hat, a towel, and sunscreen to the lake.

Don't forget to bring a hat, a towel and sunscreen to the lake.

Don't forget to bring a hat a towel, and sunscreen to the lake.

This semester he is taking Spanish, English, Math, and Science at the university.

This semester he is taking Spanish English, Math, and Science at the university.

This semester he is taking Spanish, English, Math and Science at the university.

I needed to buy a notebook, a pack of pencils red pens, and scotch tape.

I needed to buy a notebook, a pack of pencils, red pens, and scotch tape.

I needed to buy a notebook a pack of pencils red pens, and scotch tape.

We found an old tin can, a rusty nail, some gum wrappers, and a dime.

We found, an old tin can, a rusty nail, some gum wrappers and a dime.

We found an old tin can, a rusty nail some gum wrappers, and a dime.

Sheila invited her sister, her cousin, and her best friend to the museum.

Sheila invited her sister her cousin, and her best friend to the museum.

Sheila invited her sister her cousin and her best friend to the museum.

Over the summer, I will work at the law firm Lane, Lewis and Martinez.

Over the summer, I will work at the law firm Lane, Lewis, and Martinez.

Over the summer, I will work at the law firm Lane Lewis and Martinez.

During our vacation, we visited the museum, played in the park and swam in the ocean.

During our vacation, we visited the museum, played in the park, and swam in the ocean.

During our vacation, we visited the museum, played in the park, and swam, in the ocean.

Because the bike, was in the street a car ran over it.

Because, the bike was in the street a car ran over it.

Because the bike was in the street, a car ran over it.