Spending too long on one question
Move on. Mark it and come back if there is time.
Not reading the whole text
In Parts 5–7, skim first to understand the gist before answering.
Ignoring word count in transformations
Part 4 requires 2–5 words including the key word. Counting matters.
Forgetting to check spelling
Especially in Parts 2 and 3 — wrong spelling = wrong answer.