II. 

1. Immorality

2. Irregularity

3. Inequality

4. Uncomfortable

5. Unfortune

6. Crime

7. Dangerous

8. Unpleasant

9. Arrival

10. Admittance

11. Unfaithful

12. Recognized

13. Convinces

14. Memorable

15. Warmth

III.

1. We don't know where to put the sofa.

2. The rules didn't specify who to speak to in case of an emergency.

3. Mai wondered how to ride the scooter.

4. Let us decide when to start the project.

5. Could you tell me where to find a good hotel?

6. We must find out what to do next.

7. A good dictionary tells you how to pronounce the words.

8. We are not sure who to meet at the entrance.

9. I can't remember when to turn off the oven.

10. Do you know what to look for?

II. 

1. immorality

2. irregularity

3. inequality

4. uncomfortable

5. unfortune

6. crime

7. dangerous

8. unpleasant

9. arrival

10. Admittance

11. unfaithful

12. recognized

13. convinces

14. memorable

15. warmth