Aktiv til passiv på engelsk sætninger

Hjælp! Fra aktiv til passiv, har jeg gjort det rigtigt??

1. The students often play computer games in the classroom.
Computer games are often played in the classroom by the students.

2. Unfortunately the robbers took all the money.
All the money was unfortunately taken by the robbers.

3. The little girl has given her grandmother five apples.
Five apples were given by the little girl to her grandmother.

4. She is decorating her house with flowers from the garden.
The house was decorated by her with flowers from the garden.

5. He had kissed her twice.
She gets kissed twice by him.