Open your book, Don't open your book, Stand up, , Stand up, Sit down, Don't stand up, , Close your book, Don't open your book, Open your book, , Stand up, Don't sit down, Don't stand up, , Sit down, Stand up, Don't sit down, , Don't stand up, Sit down, Don't sit down.

Imperative

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？