1.were made
2.were not added
3.was bought
4.was not made
5.was sold
6.were produced
3.
1.What currency is used in your country?
The ruble is used in my country.
2.There are euros used?
Evros are used in Europe.
3.Were banknotes first made in Turkey?
First banknotes were made in China.
4. What are credit cards made of.
Credit cards are made of plastic.
5. What system was used before money?
Salt was used before money.
Хорошего дня и удачи!!!