1. I'm very concerned abput (famine / inflation / overpopulation). It's terrible that millions of people don't have enough food to eat.

2. Awareness projects can help reduce the spread of diseases such as (global warming / HIV/AIDS / poverty).

3. I will pass my exam only through hard work. Without (courtesy / perseverance / tolerance), I'll fail.

4. I didn't learn (artistic appreciation / cooperation / creativity) on my own. I learned it by playing team sports.