My mother has got sick suddently with high fever and now staying at the hospital. She requires someone to take care, but my father is in a business trip in Wuhun, so I need to apply for a three-day leave.母亲突然发病,发高烧,在住院,需要人照顾。My mother was suddenly ill with high fever, is staying at hospital, need be taken care of.父亲出差去武汉。My father was on a business trip to Wuhan.所以请三天假。
So ask for three days off.