A useful way to practise is to write your own questions. By doing this, you can cover a range of topics without needing to search for questions in books or on the Internet. You can also keep the questions clear and simple.
Let's write 3 questions about 'population growth' (yesterday's listening topic):
The populations of many countries are increasing rapidly. Discuss the advantages and disadvantages of this trend.
Many people believe that it is time to limit population growth. To what extent do you agree or disagree?
Problem and solution
The populations of many countries are increasing rapidly. Explain what problems this trend may cause, and suggest some possible solutions.