Choose the correct sentence. ( : 1)
A) My father used to do sedentary activities when I was a teenager.
B) Some people would fought against injustice.
C) We didn’t used to teach Spanish at school.
D) We used enter to Goygol national park, but now it’s forbidden.
E) My sister used to work hard yesterday.

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i see a fire fighter fighting fires. i see a car mechanic changing tires (tyres). i see a pilot flying through the air. i see a barber cutting people's hair. i see the people in my town and i say hey, brother, what's going down? i see a postman with the mail. i see the police putting folk in jail. i see a lifeguard at the swimming pool. i see the teachers in the local schools. i see the people in my town and i say hey, brother, what's going down? doctors, nurses, astronauts, judges, lawyers in the courts. i see an actor acting on the stage. i see a writer writing on a page. i see a chef working in a restaurant and a waiter asking what you want. i see the people in my town and i say hey, brother, what's going down? doctors, nurses, astronauts, judges, lawyers in the courts. i see the people in my town and i say hey, brother, what's going down? i say, hey, brother, what's going down?  

все они называются present participle