Ejercicio 1
The book which/that I read was very interesting.
The teacher who teaches English is very kind.
The day when we met was sunny.
The house where I live in is very old.
The man whose car broke down is my neighbor.
The restaurant where we had dinner was fantastic.
The woman who is standing there is my aunt.
The reason why she left is still unknown.
The student who got the highest score is absent today.
The park where we play football is nearby.
Ejercicio 2
The scientist whose theory changed the world was awarded the Nobel Prize.
The village where we spent our summer vacation is very picturesque.
The artist whose paintings are on display is very talented.
The moment when she heard the news, she burst into tears.
The company which/that produces this software is based in Silicon Valley.
The man whose house was destroyed by the hurricane has received a lot of support.
The year when I graduated was one of the best of my life.
The library where I often go to study is open 24/7.
The teacher who you were talking about just entered the room.
The project that we worked on together was a great success.