Past perfect simple and continuous

I was very late. When I arrived, the conference _____.

When they arrived at the police station, he said that he _____ anything wrong.

I looked at him and I knew he _____ in a fight, because he had a black eye.

he children were wet because they____________(play) football in the rain.

Everything was white because it___________(snow).

When he retired he _____ in the company for more than 50 years.

I was delighted when I found my keys. I(look) for them for hours.

The passengers were cross because the airline___________(lose) everyone's bags.

We ………………………….. for less than an hour when the coach broke down.

After she …………………………. (chose) a new skirt, she looked for a top to match it.

They ………………………….. for their dog for two days when it turned up outside their house.

He eventually went to the doctor because his leg ………………………….. for a week.