(Not a teacher)
The first means that you were told 'you are being taken to a police station' as you were on your way to the police station - that is, in the police car.Which one is correct to refer to a reported event.
1) They said I was being taken to a police station
2) They said I had to be taken to a police station
The second means that the 'they' told you that you have to be taken to a police station.
They are both correct, but they differ in their meaning. Hopefully, you can see that from what I said above.
English has more words than I care to imagine for ways of moving. You could say any of these for any animal - whichever is appropriate.Is there any word to describe the movement of an animal, for example dog. Can we say : I saw a dog running across a road or I saw a dog scampering across a road.
Off the top of my head, some adjectives to describe movement are: walk, run, jog, sprint, scamper, scurry, scramble, doddle, waddle, dilly-dally, bumble, stumble, hop, skip, spring, slide, squirm, slither. That's enough.