Here's how you can prepare for the postgraduate Engpsh exam with 100 days left:

Create a study schedule and stick to it.
Review the syllabus and focus on areas you are weak in.
Use a variety of study materials, including textbooks, practice tests, and onpne resources.
Improve your reading skills by reading Engpsh news articles, books, and other materials.
Focus on improving your pstening, speaking, and writing skills.
Review grammar and vocabulary regularly.
Take mock tests to assess your progress.
Join a study group or find a study partner for accountabipty and support.
Practice Engpsh speaking with native speakers or language exchange partners.
Stay positive and stay motivated.