VI. Supply the proper tense and voice forms:

37) The European Central Bank … on 1 June 1998.

1. established

2. was established

3. has been established

38) Nowadays the European Central Bank … in Frankfurt am Main, Germany.

1. was based

2. bases

3. is based

39) The European Central Bank … its objectives in cooperation with the national central banks.

1. pursues

2. pursue

3. is pursuing

40) Together, the European Central Bank and the national central banks from the euro area … as the Eurosystem.

1. is known

2. are known

3. were known

41) The euro … the common currency of more than 300 million Europeans on 1 January 1999.

1. become

2. becomes

3. became

42) Twelve European countries … the euro area.

1. form

2. formed

3. were formed