As I've said before, task 2 introductions should be short and direct. You only need to write two sentences in order to do two things:
- Introduce the topic.
- Respond to the question, making your position clear.
Take this question from last week's lesson:
More houses are needed in many countries to cope with increasing populations. Would it be better to build houses in existing towns and cities, or to develop new towns in rural areas?
Here's my 2-sentence introduction:
It is true that the populations of many countries are growing, and that new housing is therefore needed. In my opinion, it would be better to increase the provision of housing by creating new towns, rather than by further developing existing towns and cities.