Let's identify the odd word in each line:

1. B. house (apartment and cottage are types of residences, while house is also a type of residence)
2. C. cottage (and, in, and on are prepositions, while cottage is a type of residence)
3. B. window (kitchen and bedroom are rooms in a house, while window is an architectural feature)
4. A. city (village and countryside are rural areas, while city is an urban area)
5. B. metal (bag, building, and glass are all materials, while metal is also a material but it doesn't belong with the others in this context)
6. C. rubbish (garbage and litter are types of waste, while rubbish is a synonym but less commonly used)
7. A. reusable (bin, paper, and bag are items commonly associated with waste management, while reusable refers to an item's ability to be used multiple times)
8. D. at (bin, paper, and bag are items commonly associated with waste management, while at is a preposition)
9. C. repeat (reuse, reduce, and recycle are the three R's of waste management, while repeat is not typically associated with waste management)