C2 Proficiency common mistakes
C2 Proficiency · Understand the traps and how to avoid them.
In Part 1 (multiple-choice cloze), the candidate picks the option that simply 'sounds right' or has the most similar meaning to a word in their own language, without checking the collocation or grammatical pattern the gap requires.
Part 1 tests lexico-grammar through fixed phrases, dependent prepositions, phrasal verbs and collocations. Candidates read the whole sentence for gist and choose a semantically plausible word, but distractors are usually near-synonyms that fail on collocation or complementation (e.g. a verb that needs a different preposition or cannot take the structure that follows the gap).
What to do instead
Before looking at the options, read the sentence and predict the meaning and the grammatical slot (verb + preposition? noun + of? adjective + to-infinitive?). Then eliminate options that fail the pattern test, not just the meaning test. Build a personal log of collocations missed in practice, recording the full phrase rather than the single word.
In Part 2 (open cloze), the candidate writes a word that fits the meaning but not the grammar, or leaves a gap blank because no content word comes to mind, instead of hunting for the grammatical word the structure demands.
Part 2 almost always targets function words: articles, prepositions, pronouns, auxiliaries, conjunctions, quantifiers, comparatives, and parts of phrasal verbs or fixed expressions. Candidates search for a vocabulary item and overlook that the gap may need, for example, a relative pronoun, a modal, or the second half of a correlative pair.
What to do instead
Analyse the clause structure around each gap: identify what is missing syntactically (subject? auxiliary? conjunction? preposition after a verb?) before considering meaning. Practise with a checklist of the word classes Part 2 tests, and always re-read the completed sentence to confirm it is grammatical, not merely sensible.
In Part 3 (word formation), the candidate supplies the base word unchanged, or produces a form that is the right part of speech but the wrong prefix, suffix or spelling (e.g. a negative form where a positive is needed, or an adjectival form where an adverb is required).
Candidates recognise the root word and stop at the first derivative that comes to mind, ignoring the syntactic slot (does the gap need a noun, adjective, adverb, or a plural?) and the semantic polarity signalled by the context. They also underestimate how often internal spelling changes occur (consonant doubling, vowel change, dropped e).
What to do instead
For every gap, decide the part of speech first from the surrounding grammar, then decide singular/plural and positive/negative from the context, and only then build the word. Keep a running list of families with tricky spelling shifts and test yourself on the derived forms, not the roots.
In Part 4 (key word transformations), the candidate writes a sentence that conveys the same idea but changes the meaning slightly, omits part of the original information, or uses more or fewer than the permitted number of words.
The task requires the second sentence to be semantically equivalent to the first while incorporating a given key word, within a strict word limit. Candidates focus on producing a paraphrase and lose track of information encoded in the original (negation, tense, aspect, comparison, modality), or they add articles and auxiliaries that push them over the limit.
What to do instead
Treat it as an equation: list the meaning components of the original (who, what, when, how certain, compared with what) and tick each one off in your answer. Count words explicitly, remembering that contractions count as two words. Drill the recurring structural transformations (passive, reported speech, conditionals, inversion, comparatives, modal equivalents) as patterns rather than as one-off puzzles.
In the reading papers, the candidate answers from general knowledge or from a single matching word, rather than locating and interpreting the specific evidence in the text; in gapped-text tasks they choose a sentence because its topic matches rather than because its cohesive links fit.
Under time pressure, candidates skim for lexical overlap and treat a shared topic word as proof of a correct answer. Distractors are deliberately built on such overlap, while the correct option paraphrases the text. In Part 6, success depends on reference words, discourse markers, and the logical relation between sentences, which surface matching ignores.
What to do instead
For multiple choice, underline the exact lines that justify your choice and reject any option you cannot tie to a specific phrase. For gapped text, read the sentence before and after the gap and identify pronouns, determiners, and linking words that must connect; predict what the missing sentence must refer to before reading the options.
The candidate writes a Part 1 essay that describes the two input points one after another and ends with a summary, without developing a clear position or integrating the ideas into an argument.
The essay requires candidates to select and develop the most relevant ideas from the input texts and reach a conclusion, but many treat it as a comprehension summary. They also misjudge register, slipping into conversational phrasing or unsupported assertion instead of a controlled, formal argument.
What to do instead
Plan in three moves: state the issue and your stance, develop two points with reasons and examples (drawing on the input ideas but adding your own), and close by reaffirming the position. Practise writing thesis statements that commit to a view, and edit drafts specifically for register: replace informal intensifiers and vague claims with precise, formal wording.
In Part 2, the candidate ignores the genre conventions of the chosen task (report, proposal, review, letter, article) and writes a generic essay-shaped text that does not address the specified reader and purpose.
Each option carries a defined audience, purpose and format, and the mark scheme rewards consistent register and appropriate organisational features (headings, recommendations, evaluative language). Candidates choose the option they find most interesting rather than the one whose conventions they can control, and they omit the functional moves the task demands.
What to do instead
Before writing, identify the reader, the purpose, and the required moves (e.g. a proposal needs a current situation, a recommendation, and justification; a review needs description plus evaluation plus recommendation). Learn a small set of reliable organisational templates for each genre and practise adapting them to different prompts.
The candidate treats the listening paper as a test of memory, trying to retain everything, and answers an item as soon as they hear a matching word, then stops listening to the rest of the relevant stretch.
Distractors in the listening paper are often mentioned first and corrected later, or are attributed to the wrong speaker. Candidates who latch onto the first lexical match, or who try to hold the whole recording in mind, miss the qualification, negation, or speaker change that determines the answer.
What to do instead
Use the pause before each section to predict what kind of information each item needs (a reason, a number, an attitude, a speaker's opinion). During the recording, listen for the completion of an idea and for cues such as 'actually', 'but', 'although', and speaker attribution; write brief notes and only commit to an answer once the relevant exchange has finished.
In the speaking test, the candidate produces long, fluent monologues that never engage the partner, or conversely waits passively for the examiner to drive every exchange, so collaborative and interactive skills are never demonstrated.
The paired format assesses interactive communication, including initiating, responding, and developing the discussion together. Candidates either over-perform to hide nervousness or freeze, and in the collaborative task they talk past each other rather than building on and negotiating each other's contributions.
What to do instead
Practise the collaborative task with a partner: ask for their view, respond to their point before adding yours, and use language of negotiation ('That's a fair point, though I'd argue...', 'Shall we settle on...'). Aim to speak in extended but purposeful turns, and in the discussion phase answer the examiner's question directly before elaborating.
The candidate relies on a memorised bank of advanced vocabulary and complex structures, inserting them regardless of whether they fit, and sacrifices accuracy and coherence for the appearance of sophistication.
Candidates know the mark schemes reward range, so they force in idioms, inversions, or low-frequency lexis that do not collocate with the surrounding language, producing errors and unnatural register. This affects writing and speaking alike, and it also distorts pronunciation when unfamiliar phrases are attempted without control.
What to do instead
Prioritise accuracy and appropriacy: use advanced language only where it is the natural choice, and prefer a well-collocated mid-frequency phrase to a misfiring rare one. Record new lexis in full collocating chunks with an example of your own, and review written work to remove any phrase you cannot justify as appropriate to the genre and audience.