Here's why:
* "All students" is a plural noun, so we need a plural pronoun.
* "Their" is the possessive pronoun for "they," which refers to the plural "students."
The complete sentence is: All students must bring their homework to class.
Here's why:
* "All students" is a plural noun, so we need a plural pronoun.
* "Their" is the possessive pronoun for "they," which refers to the plural "students."
The complete sentence is: All students must bring their homework to class.