Complete the tag questions and answer them .
Example : The Tower of London is an ancient cathedral,... ? - The Tower of London is an ancient cathedral , isn't it ? - Yes it is .
1. There are lots of interesting sights in the Tower,...?
2. The Tower of London was founded twenty years ago,...?
3. Beefeaters aren't the guards of the Tower Bridge,...?
4. Special excursions take place in theTower,...?
5. You can see the Crown Jewels in the ancient fortress,..?
6. The White Tower isn't situated in the Houses of Parliament,...?
7. The Tower of London has a cruel history,...?