This sentence does not contain a colon where necessary. The phrase "a Macbook Pro" is a dependent clause that needs to be separated from the main clause at the very least. This phrase, however, is a dependent clause so a semicolon cannot be used (semicolons only join independent clauses). A hyphen is inappropriate because a colon is a better choice: the words "a Macbook Pro" explains specifically what type of computer Misha bought. When joining clauses without a conjunction and the second clause explains something in the first clause, a colon is the best option. The correct answer is, "a new computer from the store: a Macbook Pro."

This sentence misuses a colon. Colons are used to combine two clauses when the second clause explains something about the first clause. The colon in this sentence only awkwardly splits the existing clause. The correct choice is, "the recipe so that he would not forget."

This sentence misuses a colon. Colons are used to combine two clauses when the second clause explains the whole- or something about the first clause. This sentence is a simple sentence, so there is only one clause present. Colons are never just placed before a preposition, unless that preposition begins a new clause (which is not happening here), and they never come after a preposition, as that would split the prepositional phrase. The correct choice is, "plan for the employees to follow in times of chaos."

Colons are often used to introduce quotations; however colons used in this fashion cannot follow a verb (like "shouted"). In this sentence the colon should be replaced with a comma. Direct quotations (including punctuation) must be enclosed in quotation marks.

This sentence misuses a colon. Colons are used to join two separate clauses, when the second clause explains the whole- or something about the first clause. Colons should never split up a clause and, therefore, can never come after a preposition (this would split the prepositional phrase). This is a simple sentence, so no extra punctuation is necessary. The correct choice is, "Damian's shares for 600 million dollars."

This sentence misuses a colon. Colons are used to join two separate clauses, when the second clause explains the whole- or something about the first clause. Colons should never split up a clause and, therefore, can never come after a preposition (this would split the prepositional phrase). This is a simple sentence, so no additional punctuation is necessary. The correct choice is, "become the CEO of a Fortune 500 company."

This sentence contains a colon where one is not necessary. Colons are used to join two clauses when the second clause explains something about the first clause. Colons are not used with conjunctions like "because," though. Furthermore, the word "because" does not need a comma before it (only coordinating conjunctions need a comma before it when joining an independent clause to another. The correct choice is, "The teacher's rates were high because his students."

This sentence contains an error in the usage of the colon. Colons are used to join two clauses when the second clause explains something in the first clause. The colons in the choices above, however, only split up the existing clauses (Colons never are used in the middle of clauses and absolutely never after a preposition like "of"). The best choice is to omit the colon. The correct answer is, " in order to achieve his goal of becoming a pro skater."

This sentence misuses the colon. Colons are used to join two clauses (the first one has to be independent) when the second clause explains/describes something about the first clause. In the above choices, the colon does not appear in any place between clauses. The correct choice is, "He always appreciated a pen that wrote well."

This sentence does not contain a colon where necessary. The phrase "The Grapes of Wrath, Animal Farm, and To Kill A Mockingbird" describe exactly what books the subject plans to read. Colons should be used when combining two related clauses when the second clause explains something about the first one; therefore, a colon should appear after the word "vacation." The correct choice is, "books during his vacation: The Grapes of Wrath, Animal Farm, and To Kill A Mockingbird."