auxiliary verbs: was, did, have

The flight ......... delayed because of bad weather.
was
were
did
had

......... you do much sightseeing when you were on vacation in Madrid?
Was
Were
Did
Had

They ......... leaving for the airport when I last saw them.
was
were
did
had

I ......... forgotten to set my alarm clock, so I was late for my train.
was
were
did
had

......... it raining when you left your office this afternoon?
Was
Were
Did
Had

The employees ......... informed last night that their company was going into receivership.
was
were
did
had

The police located the art work which ......... been stolen from the gallery.
was
were
did
had

The fire ......... caused by an electrical problem.
was
were
did
had

She was surprised that he knew her name. She ......... never met him before.
was
were
did
had

How many times ......... your travel documents checked before you boarded the airplane?
was
were
did
had