The key answer of exercise 1
The key to exercise solutions in chapter 6.4 - Reading for the textbook Focus 3 - Workbook with authors Daniel Brayshaw, Bartosz Michałowski, Vaughan Jones and Sue Kay from Pearson Education
Question
Read the article. Why is it called A lot of light bulbs?
Answer
Because the writer is comparing Jack to Thomas Edison, the inventor of the light bulb