(A) asks, 'what is that?' compared to 'what are those?' Therefore, (B) responds to the question: "This is a dog, this is a cat, and this is an elephant." However, it does not change the meaning of the sentence if the repeated words are omitted: "This is a dog, this isa cat, and this is an elep
Thanks a lot. So, if A asked, what are these/those and B replied with 'These are a cat, a dog, and an elephant', would that be a valid construction too?