exercise 4Bb
1. b
2. b
3. a
4. b

exercise 4Bc
1. failed to apply corrosion inhibitors
2. contaminated in lead
3. causing birth defects in newborns
4. despite thousands of complaints
5. At just 8 years old
6. is present in everything he does
7. films covering topics such as mental health and dementia
8. a comprehensive ban across the UK
9. so as to conform to a heteronormative lifestyle
10. in the future

exercise 4Bd Translate.
1. Hate speech covers topics such as racism and discrimination but encourages people to act violently.
2. It contaminates people’s minds and those who are completely unaware / ignorant of it can take it at face value.
3. Despite millions of complaints sent to social media companies, they haven’t done much.
4. There will be a comprehensive ban on hate speech in the future.