11. Read the questions carefully. Ring the letter of the correct answer. 1. A is a group of sentences related to a particular topic. A topic C. paragraph B. sentence D. phrase 2. The is the most important piece of information that the author wants you to know about the paragraph. A main idea C. paragraph B. sentence D. supporting details 3. The sentence which expresses the main idea is called the A main idea C. introduction B. summary D. topic sentence​