She have / has got a younger sister, Gemma.

They share / shares a room.

The room are / is quite small.

There are / is a computer in the room.

Anna often plays / play computer games.

Gemma don't / doesn't like computer games.

Gemma and Anna's parents also don't / doesn't like computer games.

Their parents uses / use computers at work.

They think that some computer games is / are not good for children.