1. C: "Whom" is the correct form for an indirect object, not "who," which is only used as a subject.
2. A: The correct past tense of "to lie" is "lay." "Laid" is only the past tense of the transitive verb form, i.e. one that takes a direct object, e.g. "She laid the book on the table."
3. E: This sentence is correct as it is written.
4. E: This sentence is correct as it is written.
5. D: "Sue and I" is incorrect as a direct object and would only be correct as a subject, e.g. "Sue and I had always had trouble with science." As an object, one would not write "Science had always given I trouble" but "Science had always given me trouble." Therefore, it should also be "Sue and me."
6. D: The correct adverb (telling how) to modify the verb "sleep" is "soundly." "Sound" is an adjective and would only modify a noun, e.g. "Sound sleep is important to your health."
7. D: Both verbal direct objects modifying the same verb ("like") should agree. Since the gerund "skiing" comes first in this sentence, it should be followed by "and skating." (If one prefers the infinitive form, seen in this sentence's second object, then both should match: "...I usually like to ski and to skate.") Mixing forms causes disagreement.
8. E: This sentence is correct as it is written.
9. E: This sentence is correct as it is written.
10. C: The plural noun "many" (suggestions) requires the plural auxiliary verb "have" rather than the singular "has" with "been rejected."
11. C: "Justices'" is used here as a noun, not a name/title/proper noun (e.g. "Justice Kagan"), and so should not be capitalized.
12. E: This sentence is correct as it is written.
13. A: The correct present perfect tense of the intransitive verb "to lie" is "have lain," not "have laid." The latter is only correct when transitive, i.e. taking an object, e.g. "We have always laid these books on this table."
14. C: The correct adverb to modify the verb "leave" is "quickly." "Quick" is an adjective and can only modify a noun, e.g. "You had better make a quick trip home if you want to avoid the storm."
15. D: The correct spelling for this meaning is "illusion," meaning a false or deceptive appearance. "Allusion" is a different word meaning an indirect reference, e.g. "The poem's use of threes is an allusion to the trinity."
16. A: The word "infer" is incorrectly substituted here for "imply." Mr. Smith would imply, i.e. hint or suggest in what he said; his students would infer, i.e. deduce from or read into what he said.
17. E: This sentence is correct as it is written.
18. D: There should be a comma between "luckily" and "I copied..." "Luckily" is an introductory word here for the second of two independent clauses. Introductory words like "however," "therefore," "fortunately," etc. should be followed by commas.
19. B: "Amount" is used with mass, collective, or non-count nouns, e.g. a large amount of water. In this sentence, "representatives" is a plural count noun, so it should read "...the total number of representatives..." rather than "amount."
20. D: "Etc." is the standard abbreviation for the Latin phrase "et cetera" (translated from Greek), which means literally "and the rest." Since "et" means "and," to say or write "and etc." is redundant, i.e. saying "and" twice.
21. B: The verb must be the singular "concerns" to agree with the subject "clean air." The plural nouns "clean lakes and rivers" are introduced by the prepositional phrase "as well as" and are part of this phrase, which modifies the subject. The predicate (verb) agrees with the subject, not its modifier. Only if "and" were substituted for "as well as" would the predicate be plural.
22. E: This sentence is correct as it is written.
23. E: This sentence is correct as it is written.
24. D: The correct personal pronoun here should be "me" as a direct object rather than "myself." The latter is a special object (direct or indirect), used only reflexively, i.e. "I introduced myself to the class." The committee cannot audition "myself." Only I can audition myself; you can audition yourself; they can audition themselves, etc.
