Past simple and continuous

What were you doing when I (a)   you last night?

I (a)   (sit) in a café when you called.

When her train got to the station, we (a)   (wait) on the platform

When I (a)   (leave) he house, it was snowing.

He (a)   (work) in a bank when he met his wife.

It was a day in December. Snow was falling, children (a)   (sing) carols and people were doing their Christmas shopping.

Why (a)   (you/cry) when I arrived?

Last Year I (a)   (visit) Rome

Mr Black (a)   (work) in the garden at 10pm last night.

David (a)   (sleep) when I arrived, he was studying!