Question

Helppppppppppppppppplease

Answer 1

So, the possessive form of students (a plural noun that already ends with an -s) is students'.

Your trying to make one object to multiple so box is box’s ,Sam is sam’s. so on so on

Answer 2

Um okay " 's" is possessive "es","ies" "ves" is plural s' is plural and possessive that is all I can say.

My explanation is that I'm in 9th grade and I aced all grades.