make up sentences from the words. 1) many/ busiest/ international/ world/ in/ the/ years/ For/ Heathrow/ has/ airport/ been/ the/ .
2) is/ countries/ The/ made/ individual/ up/ of/ the/ Flags/ of/ Union/ three/ of/ the/ Kingdom's/ Jack/ .
3) part/ of/ the/ lreland/ has/ 1921/ been/ Kingdom/ since/ United/ Northem/ a /.

For many years Heathrow has been the busiest international airport in the world. Northern Ireland has been a part of the United Kingdom since 1921