Odpowiedź:
1. Bell invented the phone./ Did Bell invent the phone? / Bell didn't invent the phone.
2. Maria and Pierre Curie discovered rad./ Did Maria and Pierre Curie discover rad? / Maria and Pierre Curie didn't invent rad.
3. Mary Shelly was a singer./ Mary Shelly wasn't a singer./ Was Mary Shelly a singer?
4. They were scientists./ They weren't scientists./ Were they scientists.
5. He took a taxi./ Did he take a taxi?/ He dind't take a taxi.
6. They left the library at 8 p.m./ Did they leave the library at 8 p.m? / They didn't leave the library at 8 p.m.
