- You forgot your backpack!
- Where's your backpack?
- This backpack is blue-ish
- Does this backpack belong to him?
- Tom is putting stuff in his backpack.
- Tom always has a backpack slung over his shoulder.
- She is carrying a backpack on her back.
- Inside my backpack there are many colored pens, red ones, blue ones, green ones, etc.
- What sort of adventurer doesn't have a talking backpack like Dora?
- After that, I left, but then I realized that I forgot my backpack at their house.
- If you can't lift your backpack, then you can't carry it!