Complete the sentences using derivatives of the five words. Change the word forms if necessary. erase, transferable, devalue, multidisciplinary, innovative 1. The _____________ of air travel during this century has made the world seem smaller. 2. I have always __________ his advice because I know he is an experienced expert. 3. As a punishment for his mistake, his employer _____________ him to another office. 4. If you want to make it _____________, you'd better write it in pencil. 5. The new teacher found it diff cult to deal with classroom _____________ problems.