Помогите пожалуйста с анг. яз. Найти корректный вопрос.

из трёх вариантов нужно выбрать один
1. a. Where is he live?
b, Where does he live?
c, Where is he lives?

2. a.When you did started school?
b. When you start school?
c.When did you start school?

3. a.Who have you already told about that?
b.Who has you already told about about that?
c.Who you have already told about that?

4.
a.Where you has been?
b.Where has you been?
c,Where have you been?

5 a. Whose house is being built?
b. Whose house does being built?
c. Whose is house being built?