ĆWICZENIE 1 Przeczytaj poniższy tekst, a następnie zamień pod- kreślone czasowniki na ich formę przeszłą. Przykład is-was Isabel is a famous doctor who works in Warsaw. She has her own clinic. She specialises in cardiolo- gy and she helps her little patients every day. She saves children's lives. Isabel is also a lecturer at the Medical University in Warsaw. She gives lectures and teaches many students. She takes part in many conferences and writes many articles. Isabel was a famous doctor who worked in War- saw. She 1. her own clinic. She spe- cialised in cardiology and she 2. her little patients every day. She 3. children's lives. Isabel 4. also a lecturer at the Me. dical University in Warsaw. She 5. lectures and 6. many students. She part in many conferences and 7. 8. many articles.​