Big Ben is the UK’s most iconic symbol. Since 2017, the Elizabeth Tower and the bell inside have been (1)_____ renovation. The structure is 160 years old and (2) ______ regular maintenance. (3) ______ many years, people had been painting the hands and numbers (4) ______ the clock black, but last Thursday, the workers (5) ______ the clock’s original colour, Prussian Blue!