though tom and boo are similar when it comes to being humble , tom is African American which back then wasn't the best time to be African american. Tom also had to go to court in front of almost the whole town whereas boo didn't because of the fact that he had been inside his house away from everyone else almost his whole life.
Answer:
I think you forgot the attachment bud
pretty sure they want the "If a patient is in pain, _they_ can use the call button to alert a nurse." which is bullcrap but, what can you do
1.They're is the conjunction of they are
There is like location ex. The dog is over there
Their is associated with a person ex."her taunts had lost their power to touch him"
2. You would use an if there is if the next word begins with a vowel sound and you would use a when the next word begins with a consonant sound
3. How you would use the word to is saying something like I'm giving this to someone how you would use too is like saying this is too much say they add an extra o and two is the number so that is easy to memorize hope I can help!