大家帮忙啊,英语作业,用5个句子分别介绍老师 警察 医生这3个工作 要简单点的 比如警察 保护我们的安全

1。 A teacher is a person who provides schooling for others。2。 Policemen protect property and reduce civil disorder。3。 Doctors are trained and licensed to heal the sick。