dialogs. 1. Mother : Rudi, can you help me carry the groceries? Rudi : Of course, Mum Mother : Thank you, dear Rudi : You're welcome Why does Rudi's mother say thank you? ... 2. Simon: Erik, can I borrow your book? : Sure, here it is : Thanks a lot : Don't mention it What does Simon say after Erik lends him his book?... Soni : Ouch, this box is too heavy. Mother: Let me help you to lift it. Soni : Thanks, Mum. Mother: You don't have to say it Erik Simon Erik Who helps Soni?...​