Понимание структурно-смысловых связей в тексте

Прочитайте текст и заполните пропуски A—F частями предложений, обозначенными цифрами 1—7. Одна из частей в списке 1—7 лишняя. Занесите цифру, обозначающую соответствующую часть предложения, в поле ответа.

1. towards a faster, more economical way of repairing the tower
2. in fact, the Houses of Parliament are cracking a bit themselves
3. towards Bridge Street rather than towards the Houses of Parliament
4. and repairs took nearly nine months to be completed
5. meaning building reinforcements can wait until after the next elections
6. in fact leaning by about 0.26 degrees, according to reports
7. worrying about Big Ben's immediate demise is likely to be a waste of energy