关系代词引导的定语从句

1．that/which/who/whom

Wang Meng, who^① is the same age as me, works in a factory which/that^② lies in our town. Everything that^③ he uses is very shabby. He goes to work every day by riding the bike (which/that)^②others don't want to have. But he is a worker (who/whom/that)^④everyone admires. In our factory there are many workers who/that^① are like him.