Punctuation

Dear, Pam

Dear Pam.

Dear Pam,

We saw a lot of fireworks on July 4, 2018.

We saw a lot of fireworks on July 4. 2018

We saw a lot of fireworks on July 4, 2018,

You may have, hot chocolate, hot tea, or coffee to drink.

You may have hot chocolate, hot tea, or coffee to drink. 

You may have hot chocolate; hot tea; or coffee to drink. 

You may have hot chocolate or hot tea or coffee, to drink. 

This cool awesome sentence is totally worth your time.

This cool, awesome sentence is totally worth your time.

This cool, awesome, sentence, is totally worth your time.

This cool awesome sentence is, totally, worth your time.

Sandy,

who,

best,

president,

'Mary is trying hard in school this semester,' her father said.

"Mary is trying hard in school this semester, her father said."

"Mary is trying hard in school this semester," her father said.

Mary is trying hard in school this semester, her father said.

I want to go to Orlando Florida.

I want to go to, Orlando, Florida.

I want to go to Orlando, Florida.

Correct

Let's eat, grandma!

Let's, eat grandma! 

still,

outside,

raining, 

The sentence does not need commas

Insert comma after "think"

Insert comma directly after "though"

Insert comma after the word shy

No comma needed