2, your innovation, is your own argument, or what is your achievement.

3. What did you do about your topic?

4. It is the content part of your thesis, and will ask you what you missed. Teachers who don't know much will ask you to explain what they don't understand, and teachers who know will ask specific questions in depth.

You should ask your tutor, he will explain it to you. There is also a condom relationship with the teachers of the joint defense team so that they will not be too difficult for you. The most important thing is not to panic, whether you can answer or not, you must say it, and you can't help but answer it.