Did, Had, Was, Were

Fill in the blanks with an appropriate primary auxiliary verb.

1............... you hear the doorbell?

2What ............... you say?

3She ............... answer my question.

4He ............... unaware of the danger.

5What ............... you doing at that time?

6What ............... he doing in the kitchen?

7Who ............... you talking about?

8She ............... returned yet.

9I ............... a strange experience yesterday.

10He ............... taken to hospital.

11............... you see him yesterday?

12I ............... excited about the offer.