The key to exercise solutions in chapter 8.6 - Speaking for the textbook Wider World 1 - Student's Book with authors Bob Hastings and Stuart McKinlay from Pearson Education
Question
listen to Part 2. Why is Dad surprised? Who does Grandma call in the end?
Answer
Dad is surprised because Grandma is using Skype a lot.
She calls her sister in Chicago and the President of the USA / the White House.