The correct answers are nevertheless, be that as it may, and having said that.
Nevertheless, be that as it may, and having said that are all advanced discourse markers of concession. They are used to accept that the previous statement is true (the singed eyebrows), but to introduce a contrasting statement that reduces its impact (the breakthrough).
On the contrary is incorrect because it is used to flatly deny a previous statement and assert the opposite, rather than concede a point.
Consequently is incorrect because it introduces a result or effect, which does not fit the logic here.
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.
Conjunction
If your writing reads like a list of separate sentences — I was tired. I went home. I slept badly. — the missing piece is conjunctions. They're how you bind ideas together: I was tired, so I went home, but I still slept badly. Pick the wrong one and the relationship between ideas flips; pick none and your writing stays choppy.
A conjunction connects words, phrases, or clauses. Coordinating conjunctions (and, but, or, so, yet, for, nor) link equal units; subordinating conjunctions (because, although, if, when, while) introduce dependent clauses.
Semicolon
If you've never been quite sure when to reach for a semicolon, you're not alone — it's one of the least-used English punctuation marks. But it has a specific job: linking two complete thoughts that belong together. I went home; I was exhausted. That single mark signals "these two are connected" more elegantly than starting a new sentence and more clearly than splicing them with a comma.
The semicolon ( ; ) joins two closely related independent clauses without a coordinating conjunction: I went home; I was exhausted. Also separates list items that contain commas. Strength sits between comma and period.
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.