ACT/SAT English Grammar Online Quiz

Parallel structure requires that items in a list or series share the same grammatical form. In Option C, the three activities are all gerunds ("singing", "dating", "complaining"), making it perfectly parallel. Option B is not parallel because "no food" is a noun phrase that does not match the prepositional phrases "dishes in the sink" and "towels in the tub".

The lyric shifts awkwardly from first person ("I knew") to third person ("he never loved") and contains confusing pronoun references. Option C correctly identifies this issue as a shift in verbs and subjects, which disrupts the coherence of the sentence.

The sentence contains a misplaced modifier, "with a gun in his hand", which makes it unclear whether the man or the penguin is holding the gun. This ambiguity makes the sentence confusing to the reader.

The sentence contains two independent clauses joined together without any punctuation or coordinating conjunction. This error is known as a run-on sentence, specifically a fused sentence.

A subordinate (or dependent) clause begins with a subordinating conjunction and cannot stand alone as a complete sentence. In this sentence, "though" is the subordinating conjunction, making "though he was not happy about it at all" the subordinate clause.

Ending a sentence or clause with the preposition "at" in this context is redundant and grammatically incorrect because "where" already establishes the location. Removing "at" to leave "put the book" makes the sentence concise and grammatically correct.

The standard degrees of comparison for "good" are "good, better, best". Option B is the best choice because it avoids non-standard words like "goodest" or "bestest" and lists real, standard English words in an ascending order of quality.

"Mostest" is a non-standard, grammatically incorrect word. To modify the participle "used" to indicate frequency, the adverbial phrase "most frequently" is the most precise and grammatically correct choice.

Parentheses and brackets are punctuation marks used to enclose additional, explanatory, or clarifying information that is not essential to the main sentence structure. Although Option A contains a minor typo ("informition"), it correctly identifies this primary function.

In this sentence, the main verb is "smiled". The words "surreptitiously" (meaning secretly) and "sadly" both end in "-ly" and function as adverbs that describe how he smiled.

In the clause "beard was wonderfully whimsical", "whimsical" is a predicate adjective that directly describes the noun "beard". "Wonderfully" is an adverb modifying "whimsical", while "gloriously" and "witty" modify "uncle's".

"It's" is the correct contraction for "it is" at the beginning of the sentence. "Its" (without an apostrophe) is the correct possessive pronoun showing ownership of the value, whereas "its'" with a trailing apostrophe is grammatically incorrect.

The sentence uses the pronoun "it" and the possessive "its" consistently to refer to the singular, gender-unspecified noun "dog". Since this pronoun agreement is correct and consistent throughout, no changes are needed.

"That man" is a singular masculine subject, so the possessive pronoun referring back to him must also be singular and masculine ("his"). Using the plural pronoun "their" creates a pronoun-antecedent agreement error.

"Every student" is grammatically singular, so it requires singular pronouns. "His or her" is the traditional, grammatically correct singular pronoun phrase to refer to a student of unspecified gender, making "no change" the correct option.

The subject 'She' is third-person singular, requiring the verb 'likes' in the present tense. Similarly, the subject 'he' requires the singular verb 'does'. Option B correctly applies subject-verb agreement for both verbs.

The sentence consists of two independent clauses: 'I hate grocery shopping' and 'I have every part of it.' A semicolon is the correct punctuation mark to join two closely related independent clauses without a coordinating conjunction.

A colon is used to introduce a list of items following a complete independent clause. Option C correctly replaces the hyphen with a colon to introduce the list of groceries.

The singular possessive 'girl's' is correct here because 'her little girl' refers to a single daughter, as suggested by the singular pronoun 'she' later in the sentence. Option B correctly uses the apostrophe before the 's' to show singular possession.

The term 'boys' room' is a plural possessive noun phrase referring to a restroom designated for boys. Since 'boys' is plural and ends in 's', the apostrophe goes after the 's', making 'no change' the correct choice.

The introductory dependent clause starting with 'Whereas' must be separated from the main clause by a comma, which correctly appears after 'question'. No comma should separate the subordinating conjunction 'Whereas' from its subject 'Sam', nor should one split the phrase 'ten seconds', making 'no change' correct.

A comma is required to separate a direct quotation from the dialogue tag ('she said'). Option B correctly introduces this comma, though in standard American English, the comma typically goes inside the quotation marks.

The clause 'who enjoys torturing children' is non-essential (non-restrictive) information about 'my sister,' as indicated by the closing comma after 'children.' Therefore, it must be set off with a comma at the beginning as well, making 'sister, who' the correct choice.

The comma between 'blue' and 'creamy' is correct because they are coordinate adjectives. The comma before 'causing' is also correct because it introduces a non-essential participial phrase at the end of the sentence. Thus, no changes are needed.

The sentence begins with a long introductory prepositional phrase ('In the crevices between the bathroom tiles'), which is correctly followed by a comma before the main clause. No other changes are needed, so 'no change' is the correct option.