根据所给句子选出相应的职业。(15分)

(  )（1）I work in a hospital. I help people. I am a ________．
(  )（2）I work on the farm. I get many good things in autumn. I am a ________．
(  )（3）I drive a bus every day. I can travel. I am a ________．
(  )（4）I work at school. I love my students. I am a ________．
(  )（5）I am very busy. I catch the thieves(小偷)．I am a________．