Задайте 5 типов вопросов к предложению: she comes to us once

She comes to us once a week.

General question:

Does she come to us once a week?

Alternative question:

Does she come to us once or twice a week?

Tag question:

She comes to us once a week, doesnt she?

Negative question:

Doesnt she come to us once a week?

Special questions:

How often does she come to us?

Who comes to us once a week?

Where does she come once a week?

Why does she come to us once a week?