Was trying to see if my answers were correct.

Subject-verb
agreement
1a. Did you know a famous animal-rights activist has criticized horseracing
because of the dangers involved?
1b. Did you know a famous animal-rights activist have criticized horseracing
because of the dangers involved?
I chose A

Subject-verb
agreement
2a. Peer editing academic papers require critical-thinking skills and diplomacy.
2b. Peer editing academic papers requires critical-thinking skills and diplomacy.
I chose A

Subject-verb
agreement
3a. Vitamins that are sold in a health-food store are not regulated by the Food
and Drug Administration.
3b. Vitamins that are sold in a health-food store is not regulated by the Food
and Drug Administration.
I choose A

Using regular
and irregular
verbs
4a. John has become a rather good actor.
4b. John has became a rather good actor.
I choose A

Using regular
and irregular
verbs
5a. Some athletes have taken drug tests to prove they are not on steroids.
5b. Some athletes have took drug tests to prove they are not on steroids.
I choose A

Using regular
and irregular
verbs
6a. I lay my book on the table, but now I cannot find it.
6b. I laid my book on the table, but now I cannot find it.
I choose B

Using the
correct form of
be and have in
the present
tense
7a. I was interested in working on the presidential campaign if the opportunity
still exists.
7b. I am interested in working on the presidential campaign if the opportunity
still exists.
I choose B

Verb form and
verb tense
8a. Since American Idol premiered on television, many talented contestants
have appeared on the show.
8b. Since American Idol premiered on television, many talented contestants
appeared on the show.
I choose A

Verb form and
verb tense
9a. The ancient Egyptians built pyramids as burial sites for their leaders.
9b. The ancient Egyptians have built pyramids as burial sites for their leaders.
I choose B

Identifying
antecedents
10a. The antecedent in the following sentence is students: Students in online
classes have to be organized to keep up with their assignments.
10b. The antecedent in the following sentence is class: Students in online
classes have to be organized to keep up with their assignments.
I choose A

Identifying
antecedents
11a. The antecedent in the following sentence is Doctors: Doctors should
schedule more time for patients so they do not spend so much time in the
waiting room.
11b. The antecedent in the following sentence is patients: Doctors should
schedule more time for patients so they do not spend so much time in the
waiting room.
I choose B

Pronoun antecedent
agreement
12a. When a driver wants to buy a new vehicle, he or she usually test drives
them.
12b. When a driver wants to buy a new vehicle, he or she usually test drives it.
I choose B

Pronounantecedent
agreement
13a. Most presenters spoke without looking at his or her notes.
13b. Most presenters spoke without looking at their notes.
I choose B

Pronounantecedent
agreement
14a. You may rent a movie or a video game for just one night if they are new.
14b. You may rent a movie or a video game for just one night if it is new.
I choose B

Pronounantecedent
agreement
with indefinite
pronouns
15a. Neither the mayor nor the council members have filed their reports.
15b. Neither the mayor nor the council members have filed his reports.
I choose A

Pronounantecedent
agreement
with indefinite
pronouns
16a. Anyone who requests a copy of the game may have it for their video
library.
16b. Anyone who requests a copy of the game may have it for his or her video
library.
I choose B

Pronounantecedent
agreement
with indefinite
pronouns
17a. Each of the applicants must submit his or her completed form to the
interviewer.
17b. Each of the applicants must submit their completed forms to the
interviewer.
I choose A

Pronoun case
18a. My brother knows more about technology than me.
18b. My brother knows more about technology than I.
I choose A

Pronoun case
19a. Please send an invitation to Bob and she.
19b. Please send an invitation to Bob and her.
I choose B

Pronoun case
20a. My best friend and I are going to Hawaii this summer.
20b. My best friend and me are going to Hawaii this summer.
I choose A

Pronoun case
for who and
whom
21a. Who was the star of last year’s award-winning movie?
21b. Whom was the star of last year’s award-winning movie?
I choose A

Pronoun case
for who and
whom
22a. To who should we send the letter of commendation?
22b. To whom should we send the letter of commendation?
I choose B

Pronoun case
for who and
whom
23a. Jon Bon Jovi, who is a well-known singer and actor, also owns an arena
football team.
23b. Jon Bon Jovi, whom is a well-known singer and actor, also owns an arena
football team.
I choose A

Vague
pronouns
24a. When the car hit a tree, it made a terrible noise.
24b. The car made a terrible noise as it crashed into a tree.
I choose B

Vague
pronouns
25a. Air pollution normally increases along with population growth. This
increasing pollution is a big problem for many cities.
25b. Air pollution normally increases along with population growth. This is a big problem for many cities.
I choose B

Here are my reasons.
1. A Activist is a singular noun and has is singular

2. A Editing is singular subject so therefore you must use the singular verb require.

3. A Vitamins is plural so therefore you must use the plural verb are.

4. A The past participle is become and it is using the helping verb has.

5.

A Athletes is plural
6.

B The past tense for lay “to place” is laid
7.

B I am is present tense as is exists.
8.

A A form of have plus the past participle expresses an action
that was or will be completed at the time of another
action.
9.

B Have build is present perfect.
10.

A Students is the antecedent because they are the ones that have to be organized.
11.

B Patients is the antecedent because they are the ones that spend the time in the waiting room.

12.

B Vehicle is the antecedent and vehicle is singular.
13.

B Presenters are the antecedent and it is plural.
14.

B Movie or a video game is singular subjects joined by or therefore needing a singular pronoun.
15.

A Council members is plural, even though it's joined to mayor by or. The pronoun must also be plural.
16.

B Anyone is the antecedent and anyone is singular.
17.

A Each is the antecedent and each is singular.
18.

A Is an objective case therefore you use me.
19.

B When you test this sentence and omit “Bob and” B is correct.
20.

A The possessive case is “my” there for the subjective case is “I”
21.

A Who is the subject of the verb was.
22.

B Whom is an object pronoun of the preposition to.
23.

A Who is the subject of the verb is.
24.

B In “A” the pronoun doesn’t make it clear what made the noise it could be either the tree or the car; however, in “B” it is apparent that the car is “it”
25.

B In “A” the pronoun is clear as to what type of pollution it is; however in “B” it is made clear that it is “air pollution”

I'm checking your answers and will post within a half hour.

In the meantime you can post your reasons.

Good job! 21 of the 25 are correct!

The wrong ones are: 2, 9, 18, and 25.

Thanks for getting back to me a couple questions....

2. isn't editing is singular subject so therefore you must use the singular verb require.

9. I was thinking cause have build is present perfect.

18. I used me because "is" is objective case therefore you use me.

25. In “A” the pronoun is clear as to what type of pollution it is; however in “B” it is made clear that it is “air pollution”

That is why I chose the answers I did. Can you explain further as to why those answers were wrong?

Subject-verb

agreement
2a. Peer editing academic papers require critical-thinking skills and diplomacy.
2b. Peer editing academic papers requires critical-thinking skills and diplomacy.
I chose A
The answer is B. You are right that "editing" is a singular subject; the singular form of the verb that's needed needs to have an "s" on it -- therefore, "requires."

Verb form and
verb tense
9a. The ancient Egyptians built pyramids as burial sites for their leaders.
9b. The ancient Egyptians have built pyramids as burial sites for their leaders.
I choose B
The present perfect form of the verb is needed only if the action started in the past and continues into the present. That is not the case here. They built those pyramids in the past and have not continued.

Pronoun case
18a. My brother knows more about technology than me.
18b. My brother knows more about technology than I.
I choose A
18a is saying "my brother knows more about technology than [he knows about] me."
18b is saying that he knows more about technology than I do.
Which do you think is correct?


Vague
pronouns
25a. Air pollution normally increases along with population growth. This
increasing pollution is a big problem for many cities.
25b. Air pollution normally increases along with population growth. This is a big problem for many cities.
I choose B
If you choose B, it's not clear what "This" is referring to -- the air pollution or the population growth. Sentence A makes it clear that "this" = "pollution."

You're welcome.

2. Yes, editing is the subject and it's singular. However, the singular verb is requires.
He requires; he needs; he wants

9. Have built is the present perfect -- to be used for an ongoing action -- one that started in the past is still continues. But the ancient Egyptians haven't done anything for about 2,000 years, so we use the past tense when writing about them.

18. This is a tricky one, and many people get this wrong. This sentence really means: My brother knows more about technology than I do.
The verb "is" is not in the objective case; it's a linking or helping verb.

25. In B, it's not clear whether "This" refers to pollution or to population growth.

Thank you very much for your help. This site is very nice to have!

You're very welcome. Glad we could help you.