What are you doing? why aren't you sitting at home? whet are you doing? you aren't on the phone. are you walking your funny cat? are you surfing the internet? найдите в этом тексте : общие вопрос, специальные вопрос, глаголы в форме the present simple.

общие вопросы:
are you walking your funny cat?
are you surfing the internet? 
специальные вопросы:
why aren't you sitting at home?
what are you doing?
глаголы в форме the present simple:
aren't; are