​1) What has she argued with her friends about?

2) Why don’t they argue anymore?

3) Why did you argue with them? 

4) What did the teacher ask the students to discuss about?

5) Were they impressed with the evaluation during the discussion?

6) Have you doubted about me? 

7) Did she doubt about his research?

8) How often do they argue about their relationship?

9) Did you discuss about the agreement with them? 

10) Was it painful?

11) Why were they discussing about the contract?

12) How much is the average of people per week?