Used to / get used to / be used to

People used to believe that the Earth was flat, people used to believe that the sun revolved around the Earth, but now we know better.

Now we are used to picturing the sun as the centre of our solar system with everything revolving around it.

One of humanity’s biggest advantages is our adaptability, whatever changes the environment throws at us, we can get used to living in some quite challenging circumstances!

old books and globe in library
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