We use commas in greetings and closing of letters. The greeting of the letter provided is "Dear Jessica,". The comma is correctly placed in this greeting. The closing of the letter is "From Hannah". The comma is missing in this closing. A comma needs to be placed after "From". 

Dear Jessica,

My birthday is this weekend. I am going to have all of my friends over for a pool party. Would you like to come? We are going to play in the pool and eat pizza! I think it will be very fun. I hope you are able to come to my party. 

From,

Hannah

We use commas in greetings and closing of letters. We are missing the comma in the closing of this letter. The correct answer is "After Love". 

We use commas in greetings and closing of letters. We are missing the comma in the greeting of this letter. The correct answer is "After Tyler". 

We use commas in greetings and closing of letters. We are missing the comma in the greeting of this letter. The correct answer is "After Melissa". 

We use commas in greetings and closing of letters. We are missing the comma in the closing of this letter. The correct answer is "After friend". 

We use commas in greetings and closing of letters. The closing of the letter is at the end and is where someone would say good-bye and sign their name. Only one answer choice has the comma in the correct location within the closing.

Sincerely,

Jake

The comma comes after "Sincerely" and before the name of the letter's author. This is the proper placement for a comma in the closing of a letter.

We use commas in greetings and closing of letters. A comma comes at the end of the greeting and the end of the closing in a letter. "Dear Ralph," is an example of a properly punctuated greeting, and "Best Wishes, Jewel" is an example of a letter's closing with the comma in the correct place.

We use commas in greetings and closing of letters. The greeting of the letter includes a salutation, most typically "Dear," and then the recipient's name. There should be a comma after the recipient's name to correctly punctuate a greeting. The only answer choice that has the comma in the correct place is, "Dear Patrick,". The others have the comma in the wrong place, too many commas, or no comma at all.

We use commas in greetings and closing of letters. The closing of the letter provided is "Love, Raul." The comma is correctly placed in this closing. The greeting of the letter is "Dear Mom," The comma is correctly placed after this greeting. No additional commas are needed in this letter.

A contraction combines two words into one with the use of an apostrophe ('). The apostrophe takes the place of one or more of the letters in the second word. 

When we combine a word with "not" the apostrophe takes the place of the "o". 

Is not  Isn't