Ask questions to show your interest. There is an example (0)

Ask questions to show your interest. There is an example (0) at the beginning.
0. nbsp;I had to cook food yesterday.
Why did you have to cook food yesterday?
1. nbsp;He will have to write this letter.
When?
2. nbsp;They have to work a few days a week.
How often ?
3. nbsp;She has to go away.
Where?
4. nbsp;We have to do a test.
Do (really) ?
5. nbsp;My brother has to drive a car.
Why