1) Do they speak English well?
Are they speaking English well?
Were they speaking Englash well?
How do they speak English?
2) Does he take a show?
Is he taking a show now?
Was he taking a show?
What does he take now?
3) When did she get a bad mark?
Who got a bad mark last week?
What did she get last week?
How did she get a bad mark last week?