Unit 2 Communication----- Communication WorkshopCommunication Tools in My FamilyThirty years ago, my grandparents wrote letters to their friends and family. Grandpa worked in the city and Grandma lived in the country, so they wrote to each other. It took one week to deliver the letter. When Grandma asked a question in her letter, it took her two weeks to get the answer! If there was anything urgent, they needed to send telegrams.版权所有The telephone became a popular communication tool in ..