Warm Up 3 Revising

What is the best change we can make to this sentence: 

"It's to bad you were late to class," he said, "because I brought candy."

• Change It's to Its
• Change to to too
• Change he to He
• Change because to Because

What is the best change we can make to this sentence: 

After I went to the store I went shoe shopping with my friends.

• Change friends to friend's
• Insert a comma after After
• Insert a comma after shopping
• Insert a comma after store

What is the best change we can make to this sentence: 
"First you do your homework, than you can play on your phone," the exasperated mother replied.

• Change than to then
• Change your to you're
• Change mother to Mother
• Change replied to replyed