Ответ:

2. You look sad. Are you unhappy?

3. There are things on the floor. My brother's room is untidy.

4. Don't ask that man to show you. He's so unhelpful.

5. They never smile or say hello. They're very unfriendly.

6. My brother gets more pocket money than me. It's unfair.

Объяснение:

Ответ:

2) unhappy

3) untidy

4) unhelpful

5) unfriendly

6) unfair