Complete the following statements:
1. Money is anything that is generally accepted as a means of exchange and at the same time __________
2. Token coins are those whose face value __________
3. Cow, sheep, horse, etc. used as a means of exchange are __________
4. Money that is backed by law and cannot be refused in the transaction are called __________
5. Any two qualities of good money __________
6. Money used for purchases and transactions globally is __________