Sub questions are there to help you, you don't have to answer them one by one.

子问题是用来帮助你的，你不需要一个一个地回答。

To the second question did you infringe, there are two sub questions.

对于第二个问题，你侵权了吗，有两个子问题。

If you don't provide an answer to a certain sub question, that's fine, for example, I didn't talk about where I know about Miami from, not at all.

如果你没有回答某个子问题，那也没关系，例如，我没有谈及我是从哪里知道迈阿密的，完全没有。

The examiner checks if you develop your answer appropriately, so you have to stick to the topic, you can't start talking about something completely different, but they don't check if you answered sub questions or not.

考官会检查你是否恰当地延伸了你的答案，所以你必须紧扣主题去讲，你不能开始谈论完全不同的东西，但是他们不会检查你是否回答了子问题。