What Questions should you ASK during a Job Interview

What is the work environment like?

What is my team or superior like? (If being interviewed by HR or someone else)

What is the typical workload like during the week?

With hard work, what sort of growth / advancement opportunities are available working here?

Are there any improvements to the role I'm being interviewed for that I can bring to the table?

What sorts of challenges / obstacles should I expect to see in the first few months after being hired?