Odpowiedź :
1. Has been discovered/Maria Sklodowska-Curie
2. Have been desribed/Issac Newton
3. Have been introduced/Xerox ..
4. Has been created/Larry Page and ..
2. Have been desribed/Issac Newton
3. Have been introduced/Xerox ..
4. Has been created/Larry Page and ..
1. Was discovered, by Maria Skłodowska Curie
2. Was described
3. Were introduced
4. Was created
2. Was described
3. Were introduced
4. Was created