Пожалуйста помогите решить домашку по английскому,

5. Make the sentences interrogative.
1) I wash my hands.
2) Nick bays a car.
3) We work at the factory.
4) Olga cooks a pay.
5) They speak very good English.

Спасибо большое

1.Do I wash my hands?2.Does Nick buy a car?3.Do we work at the factory?4.Does Olga cooks a pay?5.Do they speak very good English?