a) Each paragraph should have a topic sentence, support, and a concluding sentence.
<em>The topic sentence states what the paragraph will talk about. The rest of the paragraph gives details about the topic sentence, and there is a conclusion sentence at the end. In this case, the topic sentence stated that the paragraph would be about what a paragraph should contain. Each of the following sentences explained one of the things that were mentioned in the topic sentence (topic sentence, support and concluding sentence).</em>
