Identify the mistake in each sentence 1. Wood, the hardened material from which trees are composed, is made up of millions of tiny tubes of fibers packed together A. tubes B. Composed C. made up of millions D. material from which 2. It is necessary and required that dental technicians and others who work with X-rays limit their exposure to these highly penetrating rays A. and required B. Others who C. their exposure D.highly penetrating Writing 1. Mr. Peter asked me to write this letter to you -> It is at... 2. Anna doesn't claim to have a lot of musical talent ->Anna makes 3. Handicapped people find shopping in supermarkets difficult. SHOP -> It........in supermarkets 4. I thought very hard but couldn't remember the answer. RACKED ->I.......to remember the answer 5. "Nothing will persuade me to sleep in that haunted house", she said ->She flatly.....