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
Select the most appropriate option for blank No. 2
(a) need
(b) was needing
(c) needed
(d) needs