sequense of tenses

When I last saw him, he____________ in London.

Mr. Pike ___________English at our school for 20 years before he retired last year.

When I ___________ to the airport I realized that I ___my pasport.

Call me as soon as ________your test result.

I _______ to Greece and I went there last summer.

I ______ along the street when I suddenly heard footsteps behind me.

The boy fell while he________ down the stairs.

I will come and see you before I___________for America.

When the first child was born, they _________for three years.

His health has improved a lot since he ___________ doing exercises regularly.

She hurt herself while she she _________ hide-and-seek with her friends.

What __________ at 9 o'clock last night? I phoned you but couldn't get through to you.

It is raining heavily with rolls of thunder. We __________such a terrible thunderstorm.