Помогите пожалуйста с 6,7,8,9,10 в первом задание

Affirmative:

6. Mike was a student.

7. Helen had a car.

8. You were a good friend.

9. You were good friends.

10. It was difficult to remember everything.

Negative:

6. Mike wasn't a student.

7. Helen didn't have a car.

8. You weren't a good friend.

9. You weren't good friends.

10. It wasn't difficult to remember everything.

Questions:

6. Was Mike a student?

7. Did Helen have a car?

8. Were you a good friend?

9. Were you good friends?

10. Was it difficult to remember everything?