Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

Some writers use literary illusions to tactfully reference authors who previously wrote about similar themes.

Choose the answer that best corrects the underlined portion of the sentence. If the underlined portion is correct as written, choose "NO CHANGE."

If I had practiced more, I could of won the concerto competition.

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The names of many Latin American dictators have become synonymous to "tyrant," as many of these leaders killed civilians deemed "subversives" without mercy.

In the last day of classes (1), everyone was distracted and unable to do their (2) work. Even the teacher, which normally (3) was attentive and cheery, seems (4) unable to focus. The final test took (5) way too long for everyone to complete, and many of students (6) had put down his head (7) on the desk. The sound of the heat blowing through the room was enough to put everyone (8) to sleep, and the teachers' (9) eyes began drooping despite hisself (10). After what seemed an eternity; (11) the bell had rung (12) and everyone, including the teacher, ran out of the room.

Choose from the following four options the answer that best corrects the underlined mistake preceding the question number. If there is no mistake or the original text is the best option, choose "NO CHANGE."

Speech production is a complicated and complex process, that requires the coordination of three different systems: respiration, phonation, and articulation. A deficit in any of these systems will negatively impact the quality of one’s speech.

We all know that respiration, or breathing, is necessary for life, but have you ever thought about it’s usefulness for speech? Try to talk while holding you’re breath and you will see what I mean. Exhalation provides a stream of air that the next two systems shape into what many people like to call speech.

Phonation happens in your larynx, or voice box. A pair of muscles form a shelf-like structure on either side of your larynx, and this pair of muscles is known as your vocal folds. As you exhale during speech, your vocal fold muscles contract and move towards each other. They vibrate as air passes between them, creating a buzzing sound, and this is a process that is known as phonation. The word “phonation” comes from the ancient Greek word for sound.

Finally, the last stage is articulation. At this final stage, you move your tongue, lips, and jaw to affect the way vibrating air leaves your mouth. For example, when you say the “b” sound, you need to squeeze your lips together to stop the airflow before opening your lips again. For the “v” sound, you touch your top teeth against your lower lip and force air through between your teeth and lip.

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When the patent on Alexander Graham Bell’s revolutionary invention, the telephone, expired in 1894 thousands of new firms entered the telecommunication industry. Among them were a collection of profitable companies that merged to form what would later become known as The Bell System. The Bell System had amassed such weight in the industry that in 1933, when Congress passed a law declaring phone service a public utility, the Bell System quickly transformed into a monopoly. Lawmakers enthusiastic supported a series of provisions intended to stimulate competition. Appointed as the nation’s sole provider of telecommunication services, widespread criticism about the Bell System began to surface.

The Federal Communications Act has so far been highly effective and the industry has grown tremendously as a result. In fact, for the past three years, the profitability of the largest three telecommunication companies has been greater than the largest three automotive companies. The number of calls provided by the top three companies range from five billion to six billion per day. Today, virtually everyone has made a phone call over the course of their lives. Most people do not know, however, that payment for swaths of electromagnetic wavelengths have become commonplace.

One explanation for such high call volume and large profits is that calls are becoming much less expensive for companies to provide, regardless for many large fixed expenses such as communication towers, base stations, and paying for utility poles. Over the last century, telephones had become an important part of modern society. In fact, the cost of delivering one telephone call today is about a thousandth of the cost in the 1950s. The increasing affordability and abundance of phone calls mark the progress made since the time of Alexander Graham Bell and the Bell System.

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Jeremy had no luck convincing the members of the orchestral committee about his suggestions. He pleaded, cajoled, was begging, and even threatened the committee at various times, but yet despite being the conductor, he couldnt get them to agree to his requests. Despite many attempts, the committee would not listen to him. In the end, he decided to go through with the Christmas concert despite him not having his favorite composer on the program. Afterward, one of his friends, whom was in the audience, came up and asked him why was there no Handel on the program? "I did try" Jeremy replied "but the committee were unanimously against me. I nearly begged them all day to put one piece on the program. But try as I might I could not get a Handel on it."

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Alfred Tarski, born on January 14, 1901, became known during his lifetime as a brilliant mathematician and teacher. He is best known for proving several advanced geometric theorems. By the time Tarski moved to the United States, much of Europe has already fallen into the grips of World War II. Hundreds of mathematical problems were solved by Tarski.

Tarski enrolled in Warsaw University in 1920. Originally wishing to study biology, mathematics was the subject in which Tarski ultimately excelled. He graduated with honors, and began his career as a math teacher. A true mathematical virtuoso, Tarski was concerned with neither the application of his research nor publishing his findings.

Discoveries made by Tarski influenced the work of one of the world’s greatest physicists, Albert Einstein. Einstein and Tarski had many similar interests in common. Unlike Albert Einstein, however, Tarski was especially fond for pure mathematics. Although Tarski and Einstein were contemporaries, Einstein was the most prolific writer of the two.

In 1929, Tarski married his co-worker, Maria Witkowska. An affinity for mathematics ran in the family. Tarski even admitted that his wife knew more about algebra, geometry and trigonometry than did he. Tarski's two children, Jan, and Ina, grew up to be prominent mathematicians themselves; however, neither Jan nor Ina have received a great deal of international attention.

Choose the answer that best corrects the underlined portion of the passage. If the underlined portion is correct as written, choose "NO CHANGE."

One of the most popular programs of all those featured on the Internet (1) is a video clip show. The format of the show is simple, each (2) week the host, a short but attractive New York native named John Jackson introduces (3) a set of three video clips from all over the Internet. These clips shows (4) people hurting themselves in accidents, getting into crazy situations, interacting stupidly with animals, and et cetera. (5) Jackson introduces each clip comically and often comments on the action with animations where (6) he makes fun of the people in the videos. While the videos are often funny, there is definitely an element of schadenfreude involved in watching these clips. Schadenfreude is a German word for "the pleasure one takes at seeing the suffering of others". (7) Jacksons (8) show are (9) not far removed from popular TV programs like (10) The U.S. Laughs at You there is also a version of which (11) on the Internet. It is an open question whether laughing at these videos is a harmless activity or it causes harm to us. (12)

Choose from the following four options the answer that best corrects the underlined mistake preceding the question number. If there is no mistake or the original text is the best option, choose "NO CHANGE."

The student the hand of whom was up (1) gave the wrong answer. She was asked what was a substantive adjective (2), and she answered that a substantive adjective is one that describe (3) a The student the hand of whom was up (1) gave the wrong answer. She was asked what was a substantive adjective (2), and she answered that a substantive adjective is one that describe (3) a substance. "No!" (4) the teacher barked. "A substantive adjective takes the place of a noun in a sentence, as when someone talks about the rich and the poor (5). Did you learn nothing in this class?" He then asked what a superlative adjective was, to which she replied (6) that a superlative adjective was one that took the place of a noun in a sentence. "But thats (7) what I just said," the teacher screamed! (8) The student had said (9) that she had heard him, therefore (10) she answered his question. "You answered my question previously, (11)" he bellowed, "not the last one!" "Ah, you mean the latest one," the student replied, the moment at which (12) the teacher turned to the wall and started beating his head against it.

Choose from the following four options the answer that best corrects the underlined mistake preceding the question number. If there is no mistake or the original text is the best option, choose "NO CHANGE."