Complete the sentences with the given phrases

• Manhole covers
• hidden entrances
• pavement cafe
• winding staircase

1. [ ]
   on the streets lead to the city's underground drainage system.
2. There are many
   [ ]
   to the catacombs that few people know about.
3. It's nice to sit outside at a(n)
   [ ]
   .
4. We descended a(n)
   [ ]
   into a dimly lit room.