Talk through these useful tips for this exercise:
1) Quickly read the main text and decide what each paragraph is about.
2) Check that the answer option fits grammatically in the space, looking at the words before and after the gap to infer context.
3) Decide if the first word in the sentence options is a contrasting or connecting word, and then make sure it agrees with the information in the text before the gap. If the first word is a pronoun, identify the noun in the text that it's referring to.
4) Use process of elimination to narrow down the possible answers.
5) Once the task is finished, re-read the text to check for clarity.