Cry over spilt milk means complain about something that cannot be changed. This answer is correct because the expression has a fixed figurative meaning in English. In an SSC idiom question, students should match the whole phrase with its accepted meaning rather than translate each word separately.

• Classroom example: Cry over spilt milk can refer to a situation involving complain about something that cannot be changed.
• Story example: A writer may use Cry over spilt milk when describing a situation involving complain about something that cannot be changed.
• Exam example: When a sentence contains Cry over spilt milk, choose the meaning “complain about something that cannot be changed.”