Answer: I think it's A
Explanation:
Nick went to Gatsby's party because he got an invite and wanted to know his strange and elusive neighbor better. He starts a conversation with him, without knowing it's Gatsby.
As far as I can tell, this sentence has proper grammar.
Answer:
B. it uses
Explanation:
I in the sentence is singler in this sentence.
The subject and verb don't agree, the revised sentence should be
"Sequoia and Charles plan to exercise together."
Answer:
The whole class(except Charlie, who was absent) went on the field trip.
