Here are a mere handful of common questions you could ask:

• Could you please describe a typical day on the job as (position) in this company?
• Why has this role become available?
• Where do you see this company in five years? Ten years?
• Is there anything else I can tell you at this stage to help with my application for this position?
• What are the staff retention rates?
• What career development and training opportunities are available?
• What is the company culture like?
• Ask the interviewer specific questions about their job and why they enjoy working there.

Finally, being up to date with the latest industry developments and emerging local/world news/issues can often help you stand out.