Используете правильные предлоги what are you looking who is the talking you are waiting , aren't you ? what are they talking what are they talking who is he what are you thinking what is she listening who are the traveling

What are you looking for?
Who is the talking about?
You are waiting for Kate, aren't you?
What are they talking about?
Who is he writing to?
What are you thinking about?
What is the listening to?
Who are the travelling with?
Удачи!