Is this your box?

Lin Bin: Li Ying, is this your box?

Li Ying: No. My box is small, and this one is big.

Lin Bin: Whose is it, then?

Li Ying: I think it's Wei Fang's box.

Lin Bin: Wei Fang, is this your box?

Wei Fang: Let me see. Oh, yes, it's mine.

Lin Bin: You should ( 应该 ) put it in your bedroom and look after ( 照看 ) it.

Wei Fang: You're right. But it's too heavy.

Lin Bin: Let me help you.