当前问题中的 "whatre" 是 "what are" 的缩写形式。当你在回答 "what are"句型的问题时，应该使用完整的句子形式，即 "what are you/they doing？" 的回答是 "I am doing something" 或者 "they are doing something"。例如：

What are you doing？

I am reading a book.

What are they doing？

They are playing soccer.

请根据具体情况选择合适的回答