This document contains a distilled list of the most common clue words that usually come up in the gapped text exercise of the Reading paper of the Cambridge English exams.
Having done well over 500 gapped text exercises in the last few months, while studying this task thoroughly, I've put together a list of the clue words and expressions that frequently come up at this part of the Reading test. You can download this cheat sheet here.
Just look out for these words at the beginning and at the end of the paragraphs as well as before and after the gaps and you will see your scores skyrocket.