This sentence contains no errors. No comma should appear before the word "and" because "accused it of trying to become a monopoly" is not an independent clause. This sentence is simply long because of its many prepositional phrases, which do not count as separate clauses. The correct answer is, "against the company with accusations of predatory practices and accused it of trying to become a monopoly."

This sentence contains no errors. "Big, powerful engine," "small, color-coded dials," and "the long conveyor belt" is a list of things. Normally, all items in any sort of list/parallel words or phrases should be separated by commas, but the items in this list already have commas because of the use of coordinate adjectives like "big, powerful." Using commas to separate the items would be confusing, so it is appropriate to use semicolons to separate the items in this case. The correct choice is, "new parts for the machine: its big, powerful engine; the small, color-coded dials; and the long conveyor belt."

This sentence contains no errors. This is a simple sentence, so no additional punctuation is necessary. Note that the word "that," as it is used in this way does not need a comma in order to join clauses. The correct choice is: "books so much that he writes a newsletter about them."

This sentence contains no errors. It is a complex sentence that contains prepositional phrases as subordinate clauses. No additional punctuation is necessary. The correct choice is, "Juliana's parents decided to buy a house by the beach in their retirement."

This sentence contains no errors. The phrase "According to rumors" is an example of an introductory phrase, explaining information necessary to the context of the sentence, but outside of the main sentence, grammatically. These types of phrases must be followed by a comma in order to separate them from the rest of the sentence. Note that a colon is inappropriate after this phrase, since colons should appear after an independent clause. The correct choice is, "According to rumors, the phone company will be."

This sentence contains no errors. Technically, the phrase "Tamia was flattered" could be considered passive voice, but it can also be a combination of a linking verb (was) and an adjective (flattered) acting as an appositive to the subject (Tamika). Additionally, the choices given only contain differences in punctuation, many of which turn the sentence into a fragment. No change is necessary. The correct choice is, "Tamika was flattered by the turnout."

This sentence contains no errors. The phrase "a South African English word that translates as 'kindness' " is a parenthetical expression: a phrase that explains more about a particular word or phrase in the sentence, but is not introduced by a relative pronoun. These phrases must be introduced and completed with a comma in order to separate them from the main clause of the sentence. The correct choice is, "Ubuntu, a South African English word that translates as "kindness," is also."

This sentence contains no errors. The phrase "Though he obtained a boomerang" is an example of an introductory phrase, explaining information necessary to the context of the sentence, but outside of the main sentence, grammatically. These types of phrases must be followed by a comma in order to separate them from the rest of the sentence. The correct choice is, "Though he obtained a boomerang, he could not figure out how to make it work."

This sentence contains no errors. Note that "that" should not be separated by a comma, even though it begins a new clause. Additionally, the words "The Music Man" should be in quotations because it denotes a special name. A colon could be appropriate in this sentence after the word "as" if the words "by his friends" were omitted. The correct choice is, "He was the star of so many musicals that he became known as "The Music Man" by his friends."

This sentence contains no errors. The phrase "As a part of his journaling process" is an example of an introductory phrase, explaining information necessary to the context of the sentence, but outside of the main sentence, grammatically. These types of phrases must be followed by a comma in order to separate them from the rest of the sentence. Additionally, there should not be a comma before the word "and" because "posted it in his book" is not an independent clause. Commas are only used before coordinating conjunctions when they join two independent clauses. No additional punctuation is necessary. The correct choice is, "his journaling process, he took a picture of himself each week and posted."