2. These are the girls` bags.

They are their bags.

These bags are theirs.

3. This is Luigi`s bus.

It`s his bus.

This bus is his.

4. These are the boys` books.

They are their books.

These books are theirs.

5. This is Mr Brown`s hat.

It`s his hat.

This hat is his.

6. This is Rose`s bike.

It`s her bike.

This bike is hers.

Надеюсь, помог