句型：What do you do? 询问职业 — 英语填空题

情境填空：校园开放日到了，小记者在采访。请选择合适的词填空（每词限用一次）：farmer, nurse, teacher, worker。 A: What do you do? B: I work on a farm. I'm a ___. A: What do you do? B: I work in a hospital (医院). I'm a ___. A: What do you do? B: I teach English at school. I'm a ___. A: What do you do? B: I work in a factory (工厂). I'm a ___.