хелп плиз!

1) What ________________________ (you/do) when the phone ___________________ (ring)?

2) Jane __________________________ (to study) when I ________________ (to go) to see her.

3) The letter ___________________ (to come) while I ____________________ (to have) lunch.

4) Margaret ___________________ (not to go) to work yesterday because she was ill.

5) How fast _____________________ (you/drive) when the police ____________ (to stop) you?