Choose and write a relative pronun if it is unnecessary. Wybierz i zapisz zaimek względny, jeśli jest niepotrzebny. Jeśli zaimka nie można usunąć napisz kreskę.

1. I want to show you the photos that I took during our trip to the mountains.
2. Our house, which is 50 years old, should be redecorated as soon as possible.
3. Who is the person whose car is parked here?
4. My biology teacher, who lives in my neighbourhood is always smiling.