TOEFL Exam Prep Quiz: Get Ready With Confidence

"Trembled" is intransitive because it expresses a complete action without requiring a direct object — one simply trembles, with nothing receiving the action. "Construct" requires an object, as in "construct a building." "Admire" requires an object, as in "admire the artwork." "Deliver" requires an object, as in "deliver the package." All three transfer their action to a recipient, making them transitive.

"Unambiguous" is the direct antonym of "ambiguous" because it means clear, definite, and not open to more than one interpretation — the exact opposite of ambiguous. "Vague" is actually close in meaning to "ambiguous," not its opposite. "Complex" refers to something having many parts and does not directly contrast with ambiguity. "Subtle" means not immediately obvious and similarly aligns more closely with ambiguity than against it.

"Walked" is the odd one out because it is a main verb in the simple past tense, while "will," "shall," and "might" are all modal auxiliary verbs used to express possibility, obligation, or futurity. Modal auxiliaries form a distinct grammatical category and cannot function as main verbs on their own.

A phoneme is the smallest unit of sound capable of distinguishing one word from another in a language — for example, the sounds /p/ and /b/ differentiate "pat" from "bat." A morpheme is the smallest unit of meaning, not sound. A syllable is a unit of pronunciation built around a vowel sound, not the smallest sound unit. A grapheme is a written symbol representing a sound, belonging to the written rather than phonological system.

Morphology is the branch of linguistics concerned with the internal structure of words, including how prefixes, suffixes, and root forms combine to create meaning. Phonology studies the sound systems of languages. Syntax studies how words combine to form sentences and phrases. Semantics studies meaning in language, focusing on words, phrases, and sentences rather than their structural formation.

"Coin" contains the diphthong /ɔɪ/, a gliding vowel sound that begins at one vowel position and moves toward another within a single syllable. "Grip" contains the single short vowel sound /ɪ/ with no glide. "Flat" contains the single short vowel sound /æ/ with no glide. "Press" contains the single short vowel /ɛ/ with no glide.

Linguistics is the academic field dedicated to the systematic, scientific study of language — encompassing its structure, sounds, meaning, and use across communities. Anthropology studies human cultures and societies broadly, touching on language only as one component. Sociology examines social behavior and structures, with language treated as a social phenomenon rather than the primary focus. Psychology studies mental processes and behavior, with language acquisition being one subset rather than the central concern.

A morpheme is the smallest unit of a language that carries meaning and cannot be broken down further without losing that meaning — for example, "unhappy" contains two morphemes: "un-" and "happy." A phoneme is the smallest unit of sound, not meaning. A syllable is a unit of pronunciation organized around a vowel sound and does not necessarily carry independent meaning. A lexeme refers to the base form of a word as it appears in a dictionary, which is a broader concept than a morpheme.

Morphemes in English are classified into two main categories: free morphemes, which can stand alone as independent words such as "book" or "run," and bound morphemes, which must be attached to another morpheme to carry meaning, such as the prefix "re-" or the suffix "-ness." The other options — three, four, and five — do not reflect the standard binary classification used in linguistic analysis.

"Articulate" is the closest synonym to "eloquent" because both describe the ability to express ideas clearly, fluently, and persuasively. "Hesitant" means uncertain or lacking confidence in speech, which is the opposite of eloquent. "Abrupt" means sudden or curt, implying a lack of smooth expression. "Monotonous" describes speech that is dull and unchanging in tone, which contrasts with the expressive quality of eloquence.