Quiz about Berlin;D?

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Across
  1. 4. you can see animels
  2. 5. it separated Berlin
  3. 6. its a very big place
Down
  1. 1. it is a big gate in Berlin
  2. 2. it got destroyed in the ww2
  3. 3. it is a river runs throug Berlin
  4. 7. You can see many water animals there