Josie: Have you seen Peter's new dog ?
Lara: Yes I have but couldn't (recognize) the breed.
Josie: That's not surprising because it's not a thoroughbred, it's a mongrel.
Lara: Ah, that (explains) it. What kind of a mixture is it ?
Josie: I think it's a cross between a collie and a retriever.
Lara: If that's the case it should be a very (good-nature ) dog.
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