Complete the historian's dramatic podcast script by selecting the adverb that best expresses the speaker's stance on the claim.
The mayor's decision to build the town's new flood defenses out of recycled cardboard was, _____, the most spectacularly terrible municipal choice of the decade.
The correct answer is arguably.
"Arguably" is an epistemic sentence adverb. It modifies the entire claim, showing the speaker's stance that while stating it was the "most spectacularly terrible choice" is a strong opinion, it can absolutely be supported by good evidence.
"Inadvertently" means accidentally, "mutually" requires a shared action between parties, and "marginally" means only slightly—none of which fit the historian's bold declaration.
Adverb
If you've ever written she sings beautiful when you meant beautifully, you've hit the most common adverb mistake. The fix sounds small, but it's the kind of detail that signals fluency at a glance — and once you see the pattern, you stop second-guessing it.
An adverb modifies a verb, an adjective, or another adverb, telling you how, when, where, how often, or to what degree: she sings beautifully, unbelievably fast, we go there often. Most form with -ly (quick → quickly), but a stubborn group don't change shape at all: fast, well, hard, late.
Sentence
If your writing has been called "choppy" or "monotonous", the issue is usually sentence variety — not vocabulary. English readers expect a mix of short and long, simple and complex sentences. Even the same content reads completely differently depending on how you stitch the clauses together.
A sentence is the largest grammatical unit, made of one or more clauses. Four structural types: simple (one independent clause), compound (two+ independents joined), complex (independent + dependent), compound-complex (multiple of each). Ends with period, question mark, or exclamation mark.
Comparative and superlative
If you've ever doubled up — more better, the most cleverest — you've felt the most common comparative mistake. The fix is small but immediate: every adjective gets one comparative pattern, never both. Once you internalise which words use -er/-est and which use more/most, comparing things stops being a guess.
The comparative form compares two things (taller, more polite); the superlative picks the extreme of three or more (the tallest, the most polite). Short adjectives typically take -er/-est; longer ones use more/most. A small set are irregular: good → better → best, bad → worse → worst.
C1 | Advanced
If you've ever sat through a lecture in English, written a complaint letter, or argued a point in a meeting and come out feeling actually understood — not just tolerated — you've felt what C1 looks like. The level matters because it's where most universities, certifications, and skilled-work environments draw their language line.
C1 is the advanced level in the CEFR framework, demanding fluent and flexible language: inversion for emphasis, mixed and advanced conditionals, formal subjunctive, cleft sentences, and complex nominal phrases — all used appropriately across registers.
Difficulty: Hard
If easy and medium questions are clicking but you still feel exposed in real conversation or formal writing, you've outgrown the basics. Hard material is where the gaps you didn't know you had show up: the distractor that "sounds right", the rule that interacts with another rule, the case where context changes the answer. It's where genuine fluency is built.
The Hard difficulty tag marks upper-intermediate to advanced challenges — typically B2 and above. Interacting rules, edge cases, plausible distractors, and contexts that require genuine understanding rather than surface pattern-matching.