Unit 4 What does your mother do? Lesson 19Guess!What do I do? My work is interesting but kind of dangerous.(危险的) Thieves(贼) don’t like me. I work in the hospital every day. My work is very hard but also very important. The doctors and patients(病人) need my help. I help the doctor and look after the patients. I always wear white clothes. People call us “angels(天使) in white” Guess!Wha..