I often talk about finding keywords in the reading test. It's the same in the listening test: first read the question, then listen for words with a similar meaning. As an example, try answering the following 2 questions by reading the transcript below them. Which 'keywords' gave you the answers?
1. The course takes place on
A) Monday, Wednesday and Friday
B) Monday, Tuesday and Wednesday
C) Monday, Thursday and Friday
2. Which argument was used against having a drama theatre?
A) It would be expensive and no students would use it
B) It would be a poor use of resources and only a minority would use it
C) It could not accommodate large productions of plays
Transcript from listening test:
The course is on three consecutive mornings starting on a Monday.
A largish minority were strongly against the drama theatre, claiming that it is elitist and a waste of funds.
(Cambridge IELTS 4, test 3)