The use of "were" is incorrect in this sentence, as the subject is "one," a singular noun. Even though "were" is next to the word "boys," it needs to be a singular verb form. "One of the boys was always coming late to class" is the only answer choice that uses the correct verb form.

The verb used in the sentence, "like," is a plural form, but the subject of the sentence is actually a singular form, "Every one." A subject and verb must always be in agreement. "Every one of the kids likes their new teacher" is the only answer choice to have appropriate subject-verb agreement.

The use of the plural verb form "make" is incorrect in this sentence, as the subject, "The leader," is a singular noun. A subject and verb must always be in agreement, meaning the verb needs to be changed to a singular form. Only "the football players makes all decisions" uses the proper verb form, so it is the correct answer choice.

The subject of the sentence is a singular noun, "first," but the sentence is written with a plural verb, "were." A subject and the verb that describes its action must always be in agreement, meaning this verb needs to be changed to a singular form. The only answer choice to use the correct verb form is "the shows was much tamer."

The verb in the sentence, "were," is a plural verb, but the subject of the sentence is "one," a singular noun. Any subject and verb must be in agreement, so the verb has to be changed to the singular form, because "one" is not underlined in the sentence. Therefore, the correct answer choice is "the boys was making trouble."

Because the subject of the sentence is the singular noun argument, the verb have is conjugated incorrectly. The sentence also has a list which requires parallel phrasing. The only choice that corrects both problems is "the authority of the governor has".

The underlined portion has a very simple error, as "all" is a plural noun, and needs a plural form as the subject of the sentence. "The pack" is singular, but is not the subject of the sentence as it is written. The correct answer is "All of the pack are."

The subject of the sentence "Everyone" is a singular noun, but the verb "know" is plural. A subject and verb have to match in tense, so the verb needs to be in the singular form. The correct answer is "knows that."

Here, there is a subject-verb agreement problem. The subject is “number”, which is singular. The verb “are” does not match up with “number” because it is plural. We need to say “number…is”.

The use of the phrase "Some of the" always indicates a plural, even when referring to small slice of a larger group. The verb tense for "is" then needs to be changed into a plural form. "Some of the soldiers are still missing," is the correct answer choice.