The children (had played/in the garden while their parents were watching them.

The football season (began / was beginning) a month ago.

They (had left / left) many hours before we arrived.

We entered the house quietly because everyone (was sleeping / had slept).

I .................................... (shop) in Mercadona when I realised that I left my credit card at home.

I heard a knock at the front door so I (went / was going) to answer it.

They .................................... (get) to the airport while the plane was landing.

At this time yesterday, I (wrote / was writing) an essay.

When I was a student, I .................................... (not have) much money.

She wore the shoes she ..................................... (buy) the previous day.

Until a few years ago, no one ................................. (hear) of Harry Potter, the young wizard and hero of the children’s book Harry Potter and the Philosopher’s Stone.

By the time we (got / had got) to the cinema, the film had already started.

By the time we got to the shop, a long queue .................................... already .................................... (form) outside.