Question

柚希

(19)の答えはなぜ①のothersになるのですか？
複数形になる理由を教えて下さい🙇‍♀️

(19) Some students liked to study in a group, while (
preferred to study alone.
1 others
2 other 3 the other
4 such others
plained
ved
(20) A: Thank you very much, Stuart. It was kind of you ( n9l) me