Do you know when does the cafeteria opens?

Do you know when the cafeteria open?

Do you know when the cafeteria opens?

Do you know when opens the cafeteria?

Could you tell me the course has already started?

Could you tell me has the course already started?

Could you tell me if the course has already start?

Could you tell me if the course has already started?

Could you tell me why did you do that?

Could you tell me why you did that?

Could you tell why you did that?

Could you tell me why did you did that?

Could you tell me if you like working with animals?

Could you tell if you like working with animals?

Could you tell me do you like working with animals?

Could you tell me, you like working with animals?

Could you tell if you have any computer skills?

Could you tell me do you have any computer skills?

Could you tell me if you have any computer skills?

Could you tell me if you has any computer skills?

I was wondering you worked after school.

I was wondering where you work after school.

I was wondering where did you work after school.

I was wondering where you worked after school.

Could you tell me where in Venezuela you studied?

Could you tell me where in Venezuela did you studied?

Could you tell me where in Venezuela did you study?

Could you tell me where in Venezuela do you study?

I would like to know if you finished preparing dinner.

I would like to know if you have finished preparing dinner.

I would like to know if you finish preparing dinner.

I would like to know you have finished preparing dinner.

Could you tell if he passed his exam?

Could you tell me does he passed his exam?

Could you tell me if he pass his exam?

Could you tell me if he passed his exam?