Commas: Compound Sentences, Complex Sentences

Which sentence reads more clearly?

• "I went to the movies with Shirley and Rob went home."
• "I went to the movies with Shirley, and Rob went home."

Which compound sentence is correct?

• I was tired from school,I had to go to class anyways.
• Everyone was busy, so I went to bowling alone.
• I went to the store, I got chips.
• The storm brought heavy rain but, a tornado did the most damage

Is this sentence correct or incorrect?
My sister ate my sandwich, so I kicked her.

• Correct
• Incorrect

Which sentence is the correct compound sentence?

• Mary swam in the pool, but she didn't have any of her friends with her to swim with.
• Jennifer ate her lunch and, went to the ice cream store.
• Brooke had her party but, none of her friends could sleepover.
• Sarah and Julie had a picnic and then rode bikes

Harold is an excellent singer and he can dance all of the latest dance moves.

• Insert comma after the word "singer"
• Insert comma after the word "and"
• No comma needed

I want Harold to show me how to dance but I’m afraid to ask him.

• Insert comma before the conjunction
• Insert comma after the conjunction
• No comma needed

Harold is going to the prom with Kendra or Olivia.

• Insert comma after the word prom
• Insert comma before the conjunction
• Insert comma after the conjunction
• No comma needed

Which sentence uses commas correctly?

• Jim is very bold and smart but he doesn't always say nice things to people. 
• Jim is very bold and smart, but he doesn't always say nice things to people. 
• Jim, is very bold and smart but he doesn't always say nice things to people. 
• Jim is very bold, and smart, but he doesn't always say nice things to people. 

Where would a comma be inserted into this sentence?
"I have many questions and answers are being researched."

• After the word "questions"
• Before the word "being"
• There is no way to make this a correct sentence

Is a comma used in the following sentence?
"The coin was tossed and the game had begun."

• Yes, absolutely
• No, absolutely not
• The comma is optional, and would be inserted both before and after the word "and"
• The comma is optional, and would be inserted before the word "and"