The key answer of exercise 1
The key to exercise solutions in chapter 2.2 - Grammar for the textbook Focus 4 - Student's Book with authors Kay Sue, Jones Vaughan, Brayshaw Daniel and Beata Trapnell from Pearson Education
Question
Read the story. Why did Amelie and Steve wait seventeen years to get married?
Answer
Because a love letter Steve had sent to Amelie had been lost.