Use of English — Part 1
Multiple Choice Cloze
The format is the same as B2 Part 1. The game is completely different. At C1, two options are often both grammatically correct collocations — the deciding factor is register. This guide teaches you to read the room before you read the options.
If you've passed B2 and are now preparing for C1, or if you're scoring 5–6/8 on Part 1 but can't consistently reach 7–8, this guide targets the specific C1 competency that B2 preparation doesn't build: register discrimination. The ability to distinguish between formal, neutral, and informal collocations — and match them to the text's register — is what separates C1 candidates from B2 candidates on this part.
What exactly is Part 1 at C1?
The format mirrors B2 exactly: a text of approximately 150–175 words with 8 gaps, each offering four options (A, B, C, D). 1 mark per correct answer, no negative marking. The Reading and Use of English paper at C1 is 90 minutes (15 minutes longer than B2), covering 8 parts instead of 7. The additional time reflects the significantly greater text complexity.
What's tested at C1 that isn't tested at B2
The collocations tested at C1 come predominantly from formal written English: academic prose, quality journalism, official reports. Where B2 tests "make a decision", C1 tests "attract criticism", "yield results", "sustain an argument", "address a concern". Candidates prepared on everyday collocations will consistently miss these gaps.
Set phrases from educated written English: "subject to", "in light of", "lay the groundwork", "take into account", "on the grounds that". At B2, fixed expressions were everyday idioms ("by chance", "on purpose"). At C1, they're the stock phrases of formal discourse — the kind found in reports, analyses, and argument-based writing.
Unique to C1: gaps where two options are collocationally correct, but one is informal and the other formal. The text's register determines the answer. A text from an academic article requires "commence" not "start", "endeavour" not "try", "facilitate" not "help". Cambridge tests whether candidates have internalised this distinction — not just learned individual words.
At B2, phrasal verbs were largely concrete in meaning (call off = cancel). At C1, Cambridge tests phrasal verbs used abstractly or idiomatically in formal contexts: "give rise to", "bring about", "bear out" (= confirm). These are semantically richer and require understanding the phrasal verb's figurative meaning in a specific context.
5 strategies for C1 Part 1
Diagnose the register before reading the options
Read the text's title (if given) and first two sentences before engaging with any gap. Ask: "What register is this text written in?" Academic? Journalistic? Formal professional? This 20-second step primes you to reject informal options that B2-level instinct might find acceptable. A gap in an academic text rules out casual collocations even if they're grammatically perfect.
When two options both collocate, the less common one is usually right
Cambridge builds C1 distractors specifically to trap candidates who know "enough" vocabulary. If both B and C seem like valid collocations, ask: "Which one is more formal? Which one do I encounter in reading, not in speech?" At C1, the correct answer is frequently the option that sounds slightly more elevated or precise — not more complicated, but more specifically appropriate to the context.
Test fixed expressions as complete units including prepositions
C1 fixed expressions are often gapped at the preposition or particle — the least "obvious" part. "Take ___ account" (into), "___ the grounds that" (on), "subject ___" (to). Learn these expressions complete — not just the content words. The preposition is what Cambridge gaps because it's the element that doesn't follow predictable rules.
Extend your collocation awareness beyond nouns — target verb phrases
B2 preparation focuses heavily on adjective+noun and verb+noun collocations. At C1, Cambridge significantly increases verb+noun collocations in formal contexts: "sustain an argument", "yield a result", "bridge a gap", "merit consideration", "warrant investigation". These are formal verbs paired with academic nouns — a pattern that appears in almost every C1 Part 1 text.
Build a C1 collocation bank from authentic reading
No vocabulary list will cover every collocation Cambridge can test. The most efficient preparation is reading authentic English in the register Cambridge uses: The Economist (leader articles), The Guardian (long-form features), Cambridge academic papers, quality museum catalogue texts. When you encounter a verb+noun or adjective+noun pair you haven't seen before, record it as a unit — not the individual words.
3 mistakes C1 candidates make on Part 1
The most common mistake for candidates moving from B2 to C1: using the "sounds right" heuristic trained on everyday English. At C1, "sounds right" often means "sounds informal" — which is precisely the distractor Cambridge places. The strategy of testing each option against the surrounding words is still valid, but it must be augmented by register awareness. B2 pass → C1 failure on Part 1 is almost always a register problem, not a vocabulary size problem.
Students who have learned that "commence" and "begin" mean the same thing, or that "endeavour" and "try" are synonyms, sometimes use this knowledge to eliminate options — but reach the wrong conclusion. At C1, two synonymous words may both be "correct" in isolation but only one collocates with the specific noun or preposition in the gap. "Conduct research" and "carry out research" are both correct — but "conduct" collocates with "audit" while "carry out" does not (in formal academic prose).
When Cambridge provides a text title, topic label, or source identifier (e.g., "adapted from an academic review"), this is register data. A text identified as a "scientific journal abstract" signals formal academic register throughout — even before you read the first word. Candidates who ignore this information lose the single most reliable register signal Cambridge provides for free.
5 C1-calibrated examples with register analysis
The committee's decision to postpone the vote ___ widespread criticism from opposition parties.
A. attracted B. gained C. earned D. received
>_ A — attracted criticism
"Attract criticism" is the established journalistic collocation. "Receive criticism" is semantically valid but register-neutral. The formal/political register of the sentence makes "attracted" — with its connotation of drawing criticism naturally — the precise choice. Cambridge places "received" specifically to catch candidates who know the collocation is verb+criticism but aren't register-calibrated.
The report failed to ___ into account the long-term environmental consequences of the development.
A. bring B. take C. put D. call
>_ B — take into account
"Take into account" is the only established expression. "Call into account" is a Cambridge trap designed to be confused with "call into question" — a similar-sounding expression. At C1, fixed expression gaps deliberately use "almost right" distractors that resemble other real expressions.
Her early research ___ the foundation for decades of subsequent work in neuroplasticity.
A. set B. built C. laid D. placed
>_ C — laid the foundation
"Lay the foundation" is the established collocation — both literal and metaphorical. "Set the foundation" sounds plausible but is non-standard (confused with "set the groundwork"). "Build the foundation" is logical but not idiomatic in formal English. This is an archetypal C1 trap: all options involve physical construction verbs, only collocational knowledge resolves it.
The council approved the scheme ___ to the mayor's insistence on an independent audit.
A. subject B. owing C. due D. according
>_ A — subject to
"Subject to" means "on the condition that" — a legal/formal expression of conditionality. "Owing to" and "due to" express cause (approved BECAUSE OF the insistence). The meaning is different: condition vs cause. Register AND meaning must both be checked. "According to" introduces a source, not a condition.
The author ___ a compelling case for rethinking our assumptions about economic growth.
A. does B. makes C. creates D. builds
>_ B — makes a case
"Make a case" is the academic/literary collocation for presenting an argument. "Build a case" exists in legal contexts but is less appropriate in literary criticism. "Create a case" conflates with "create an argument". The sentence's formal register ("compelling", "rethinking our assumptions") confirms academic register throughout — and "make" is the academically preferred verb in this collocation.
Practice quiz — 5 C1-level questions
All questions target formal-register collocations and fixed expressions. Read the full sentence for register before selecting your answer.
The committee's decision to postpone the vote ___ widespread criticism from opposition parties.
The report failed to ___ into account the long-term environmental consequences of the proposed development.
Her early research ___ the foundation for decades of subsequent work in the field of neuroplasticity.
The council approved the scheme ___ to the mayor's insistence on an independent environmental audit.
The author ___ a compelling case for rethinking our assumptions about economic growth.
Frequently asked questions
How is C1 Advanced Part 1 different from B2 First Part 1? >
Do I need to know academic vocabulary for C1 Part 1? >
What percentage of C1 Part 1 gaps test collocations? >
Can I use the same strategies from B2 Part 1? >
Is it possible to get full marks on C1 Part 1 without native-like English? >
B2 Part 1 vs C1 Part 1 — key differences
| Feature | B2 First | C1 Advanced |
|---|---|---|
| Questions | 8 | 8 |
| Marks | 8 | 8 |
| Text length | ~150 words | ~175 words |
| Collocation register | Everyday / neutral | Formal / academic |
| Distractor proximity | Semantically distant | Often near-synonyms |
| Register gaps | Rarely | Regularly tested |
| Fixed expressions | Everyday idioms | Academic / formal phrases |
Practice Part 1 in full C1 exam conditions
The free demo at /c1 is a real C1 Advanced Part 1 exercise — 8 questions, full exam format, answer key with explanations. The full pack contains 5 complete C1 Advanced exams (8 parts, 56 questions each).