Problem 1: Subject-Verb Agreement
Neither of the candidates ________ prepared for the debate.
Grammar Note: The pronoun "neither" is singular and takes a singular verb ("is") when referring to singular options separately.
Problem 2: Pronoun Case
She invited my sister and ________ to the graduation party.
Grammar Note: Use the object pronoun "me" because it functions as the object of the verb "invited" (e.g., She invited me).
Problem 3: Relative Pronouns
________ did you invite to speak at the conference?
Grammar Note: Use "whom" as it serves as the objective form of the pronoun (you invited him/her/whom).
Problem 4: Word Choice
He decided to ________ down on the sofa for a short nap.
Grammar Note: "Lie" means to recline (intransitive), whereas "lay" means to put something down (transitive, requires an object).
Problem 5: Confusion Words
The new policy will significantly ________ our department's budget.
A) affect
B) effect
C) impactive
Grammar Note: "Affect" is typically a verb meaning to influence, while "effect" is usually a noun meaning the result of a change.
Problem 6: Subjunctive Mood
If I ________ you, I would take the job offer immediately.
Grammar Note: Use "were" in hypothetical or contrary-to-fact conditional clauses (the subjunctive mood).
Problem 7: Prepositions
The students are highly capable ________ passing the exam easily.
Grammar Note: The adjective "capable" is idiomatically followed by the preposition "of" and a gerund.
Problem 8: Past Perfect Tense
By the time the train finally arrived, we ________ waiting for an hour.
A) have been
B) had been
C) would have
Grammar Note: Use the past perfect continuous tense ("had been") to describe an ongoing action that was completed before another point in the past.
Problem 9: Adverbs vs. Adjectives
Our new machinery runs much more ________ than the older models.
A) smooth
B) smoothly
C) smoother
Grammar Note: Use the adverb "smoothly" because it modifies the action verb "runs".
Problem 10: Gerunds vs. Infinitives
They managed to avoid ________ in traffic by taking a detour.
A) getting stuck
B) to get stuck
C) get stuck
Grammar Note: The verb "avoid" must always be followed by a gerund ("getting") rather than an infinitive.