There are a few different ways that you can help students brainstorm ideas for writing task 2 topics.
One way is to have them think about what kinds of things they are interested in or what they feel passionate about. This can help them to come up with ideas for topics that they might be able to write about in a more personal and engaging way.
Another way to help them brainstorm is to give them a list of potential topics to choose from. This can help to get their creative juices flowing and give them some ideas to work with.
Once they have a few ideas, you can then help them to narrow down their choices by asking them questions about each topic. This can help them to focus their thoughts and come up with a more concrete idea for their essay.
Finally, you can give them some tips on how to go about planning and structuring their essay once they have chosen a topic. This can help them to get started on the writing process and ensure that they are able to produce a well-organized and coherent piece of writing.