1. Complete the text with “who/ which/ whose/ where/that”

The boy who lives next door to me has an unusual hobby. He collects rocks 1_____ he finds on the beach or in the countryside. There’s a big box in his room 2_____he keeps his collection. It’s a very heavy box! His brother, 3______sleeps in the same room as him, gets annoyed by this. I don’t think it’s something 4_____ would bother me. But I don’t really know what it’s like to share a room with someone 5____ hobby is rock collecting!