At three o'clock this morning I was sitting in a taxi on the way to the airport. - something happening before and after a specific time, The number of the world's people living in cities is getting bigger and bigger all the time. - something changing or developing, Where on earth are my glasses? I'm always losing them! - something happening again and again, More than 100 people were working in the building when the earthquake struck. - something happening before and after another action, We're staying at the Hotel Clementine, near the town square. - something temporary, I've given up maths. Now I'm studying for a degree in economics instead. - something new,

Continuous aspect

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