求帮助

[backcolor=rgba(255, 255, 255, 0)]我在二月7,星期五号时因为肚子疼,有个assignment没交, 然后就到spring  break. spring break后上课的第一天我就把assignment交给老师,但老师不收了。他说要doctor note! [/backcolor] [backcolor=rgba(255, 255, 255, 0)]一月22号时,我因为肚子疼去过emergency,医生开了药,二月7号疼时我就没去看医生,直接吃的药!想问怎样才能开医生假条?[/backcolor] [backcolor=rgba(255, 255, 255, 0)] Assignment 只有10%, 但是老师说每个assignment没拿到50%的成绩,就不让过55555!怎么办啊[/backcolor] [backcolor=rgba(255, 255, 255, 0)] [/backcolor] [backcolor=rgba(255, 255, 255, 0)]谢谢帮助啊!![/backcolor]