From the possessive of plural nouns that do not end in s by adding

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In the story "seventh grade," how do victor's hopes and expectations about teresa at the beginning of the school day compare with his hopes and expectations about teresa at the end of the school day? his hopes and expectations are exactly the same at the end of the day. his hopes and expectations are completely different at the end of the day. his hopes and expectations are strengthened by the end of the day. his hopes and expectations are weakened by the end of the day.

What would happend if organ systems failed to work together