Choose the correct preposition

1. Carlos is surfing the Net to find
   [about|out] information on the sights of London.
2. London's Tower Bridge dates back
   [from|to] 1894.
3. The bell at the clock at the north end of the Palace of Westminster is commonly known
   [as|to] Big Ben.
4. We had lunch at a nice restaurant
   [for|on] the bank of the River Thames.
5. London's Tower Bridge opens
   [up|down] so that boats and ships can pass under it.