Answer: Fabio's attitude changed because he'd be in the parade.
Explanation: Fabio is excited to be able to participate in the parade. The focus of the question isn't on why he'd be in the parade or how? But on what makes his attitude change. Every other factor mentioned corroborates that he'd be participating in the parade.
A common noun are words like house. Year
Answer: B
Explanation:
There is no need to put a comma after Jeremy , however to seperate the sentence to make the grammar correct you would need to put a comma after "and I".
Answer:
That is the ball and socket joint
Because it's late and I want to sleep, but want to help out, I'll just be doing the numbers but in the order of the sentences.
6
7
1
5
4
3
2