<em>Interesting question. Here are the revised sentences, complete with commas (when they are needed).</em>
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<em>After I finished the Chicago Marathon, my legs were tired.</em>
<em>Muhammed Ali was the greatest athlete ever.</em>
<em>My mom told me to clean my room, wash the dishes, and take out the garbage.</em>
<em>I want to listen to my iPod in class, but my teacher won't let me.</em>
<em>If I had the chance, I would change our mascot to a gorilla.</em>
<em>No, I don't want to go to Taco Bell for lunch.</em>
<em>The fireworks were fun to watch.</em>
<em>Marcus Brutus, who was tricked by Cassius, was the last conspirator to stab Caesar.</em>
<em>Antony, thinking the conspirators would kill him, fled after he saw Caesar's dead body.</em>
His character is filled with vengeance, when somebody touches him he trys to kill them
Answer: <span>A. The hungry housecat killed the small, grey mouse last Tuesday and left it on the doorstep.</span>
<span>With active voice the subject, in this case the housecat is doing the action. So with this sentence, the cat killed the mouse and then left it on the doorstep.</span>
<span>Passive voice sentences usually use the word was like in three of the four examples you gave. </span>
<span>In example B the following wording was used: was left, was killed (that is passive voice).</span>
<span>Example C: was left</span>
<span>Example D: was killed</span>
<span>While example C and D start off using active voice (the hungry housecat killed) it finishes using passive voice. The tenses should remain the same throughout the sentence. </span>
<span>Hopefully this helped and good luck</span>
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Whenever you are tasked with a writing project, there are a few different strategies that you can follow and that would most likely help you generate ideas for your paper.
In this example, your topic is social problems in America. The first thing you should do is focus on what you already know. You should think of social problems that you are familiar with. This might include subjects such as poverty, malnutrition or crime. An activity that could help you think of such concepts would be brainstorming.
The next step would be researching. You should use information sources in order to learn more about social problems in America. This might lead you to come up with ideas you had not thought about before.
After these two steps, you are likely to have an idea that would be a suitable topic for a paper.
