What are these?回答为什么是They are …,而不是These

what are these?怎么回答?是用they are 为什么? what are these?怎么回答? What are these?They are feet.为什么用They are 回答?我想问为什么要用they are 回答?而不用these are? what are these in English?怎么回答 What are these?回答（英文） What are these in English?的回答 what are yuo doing these days?回答! what's are these 怎么回答 What are these?怎么回答What are these?可以回答Those are. 为什么用What are these?提问 用They are...为什么? What are these in English?的下一句回答句 What are these?回答为什么是They are …,而不是These what are these用these are...回答可以吗?还是说一定要用they are来回答 what are these应该用these are开头的句子回答还是用they are开头的句子回答? WHAT ARE THESE?意思 what are these ones? what.are.these?中文 what are these?