list of headings is very difficult, I have made tons of mistakes of such type. After fighting it several times, through my awfull thinking, I found a better way to deal with it. Those who have gotten 7 or more marks in IELTS , in my point of view, just not take it seriously.
just like this. Anyway , those who have taken the test ot mock test know that there is at least one key answer you will be sure. Therefore you can make judge bassed on the correct choice.Hope you get a bit help.