Since & for

Present perfect simple

Hyde park/ open/ to everyone

1637 A long time

Beefeaters / guard / the king or queen

The 1400s Six centuries

There / be / bridges / across / the River Thames

The first century

Two thousand years

The British royal family / live / at Buckingham Palace

Nearly two hundred years

1837

There / be / an underground / in London

1863 More than 140

years

The new Wembley Stadium / open

2007 A few years

The London eye / spin

2000 A dozen years

Leadenhall market / open

14th century About 500

years

Double-decker buses / be / used

1829 More than 150

years

London City Hall / be / the central office

July 2002 10 years