If sentences are the bricks, then paragraphs are the walls: if your walls are not well constructed, your writing will crash to the ground. Each paragraph is a self contained unit: the first sentence is the 'topic sentence'; the last sentence is the 'link sentence' and the remaining sentences develop the subject within each paragraph. The 'topic sentence' introduces us to the subject of the paragraph and the 'link sentence' is a sentence that introduces the next paragraph: this ensures a smooth continuity in the text.
Read the following questions carefully and don't rush this 11-plus quiz. Reading comprehension is an important skill which requires concentration and effort.
See if you can work out the correct topic and link sentences.