Помогите решить

Choose the right variant:

1) Where is your brother? — He _____________ be shopping but I am not sure.

a) may c) must

b) is able to d) can't

2) Every morning I ___________ leave home at 6 because my work starts at 7.

a) ought to c) must

b) have to d) can

3) Who does the shopping in your family? — ______________.

a) So does my father. c) My father do.

b) My father does. d) Neither my father.