Réponse :

1. There is only one boy whose I don't like, but unfortunately we take the same bus to school.

2. This is the girl who is in my class.

3. The boys whose my sister told on usually pick on younger children.

4. They know I am the only boy who they never saw cry.

5. Are you the boy whose sister works on the yearbook.

Explications :

Who signifie qui et whose dont.

exemple:

Le chien qui est noir

The dog who is black