OBLIGATION: I must remember to change my password., I have to wear a uniform for work. , ADVICE: You shouldn't interrupt people when they are speaking. , Companies should have cultural awareness. , PROHIBITION: You mustn't smoke in here. , NO OBLIGATION: I don't need to clock-in at my work. , She doesn't need to cover up her tattooes for work. ,

Modal verbs

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？