Read the following leaflet about historic places in London and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12.

Historic London
Tower Bridge
Probably the most recognisable bridge in the world, Tower Bridge was designed so that its central section can be raised to allow ships (7) _______ through it. Still in working order today, it is opened 900 times a year. During those times, traffic is prevented from crossing (8) _______ bridge.
A joint ticket for (9) _______ to the Tower Bridge Experience and The Monument can be purchased for just £7 per adult.
London Bridge
The first London Bridge was built in 80 AD, but this was (10) _______ by an invading Viking army in 1014. The first bridge (11) _______ of stone. It had so many arches that the flow of the river was slowed down (12)_______ , causing it to freeze over every winter, enabling fairs to be held on the frozen ice.
(Adapted from Mastermind Use of English)