1. Check your understanding: multiple choice Circle the best option to complete these sentences. Students won't be able to perform well … a. if they have phones in class. b. unless they use common sense. c. if they don't sleep well. 2. The writer is worried by … a. what he has read in the press. b. what other teachers have told him. c. what he is seeing with his pupils. 3. Research shows that schoolchildren are tired because they … a. are going to bed very late. b. are waking up in the middle of the night. c. are getting up too early in the morning. Fear Of Missing Out is … a. anxiety about not having the latest technology. b. an irrational need to go out all the time. c. a fear of missing opportunities for interaction on social media. 5. Nearly a quarter of 12 to 15-year-olds wake up to use social media … a. once a night, on average. b. almost every night. c. once a week. 6. Students who use social media during the night … a. have weaker immune systems. b. do worse in exams. c. have a higher incidence of depression and anxiety.