Write questions. Some are present and some are past

1.She has to work very hard this month.
2.You have to pass a test before you can get a driving license.
3.I have to study very hard if I want to pass my exams.
4.They had to wait two ours for the bus yesterday

1.When …………………………?
2.What …………………………..?
3.How ………………………?
4.How long ………………………?

1. When has she work very hard?2. What have you pass before you can get a driving license?3. How have I study if I want to pass my exams?4. How long had they wait for the bus yesterday?