Present Simple Vs Present Continious

Roberto are _______ for his teacher (wait)

We ____ (study) Maths

Julia ____ making her homework at home (do)

Anne ____ (work) in a language school

My grandmother ____ (bake) some cakes

She (be) ____ a teacher

Walter ____ and english song (sing)

The children (be/not) ____ tired

____ She ____ in a restaurant? (work)

Form the interrogative sentence with the elements in parentheses:
(Have/you/a dog)