The girl who wrote this letter is Yumi.
I know the boy who used this computer.
E.T. is the movie which makes us happy.
The sweater which looks brand-new is mine.
We are looking for the man who broke this desk.
This is the book (who, which) made me sad.
I know the students (who, which) collected used stamps.
The man (who, which) shouted in the restaurant is my friend.
The man is very busy. He wrote this book
I know the girl. She took this picture.
I saw some young people. They sat in priority seats.
Children become violent. They play violent games
The girl is very cute. She gave me this cake.
I think foreign people should learn Japanese. They come to Japan.