Four options can all look possible until you read the whole sentence.
The speaker offered a ______ explanation for the sudden fall in demand. The panel called it reasonably believable, but said it was not yet persuasive or defensible and did not directly address their main question.
A. compelling B. plausible C. tenable D. apposite
The tempting choice is compelling because it sounds positive and advanced. But the panel explicitly says the explanation is reasonably believable while ruling out persuasive force, defensibility, and direct relevance. That makes plausible the licensed choice.
This is the main lexical decision in Cambridge C1 Reading and Use of English Part 1: do not hunt for a loose synonym. Test the natural pattern, register, and exact meaning across the whole sentence.
The current C1 Reading and Use of English paper has eight parts and 56 questions in 1 hour 30 minutes. Part 1 is an eight-question multiple-choice cloze. Each gap has four options. Cambridge names idioms, collocations, shades of meaning, phrasal verbs, and fixed phrases among the things this part tests. You can practise more task-focused language in the Cambridge C1/C2 vocabulary hub and see the wider set of tests in Exam English.
Six words, six different checks
Apposite and appropriate
Apposite means very well suited or relevant to the point at hand. It is formal and analytic: an apposite example, an apposite title, or apposite to the discussion.
Appropriate is broader. It is the normal word for suitable conduct, clothing, timing, or language. The words overlap, so a question should not pretend that appropriate is false whenever apposite works. Instead, look for a strong pattern or register clue. A formal review might praise an apposite comparison. A workplace rule is more likely to require appropriate clothing.
Compelling and convincing
Compelling describes a strong pull on attention or judgment. A compelling argument may be hard to dismiss; a compelling story may hold attention. It does not mean true, mandatory, or logically sound.
Convincing focuses more directly on causing belief. The two overlap. A dry argument can be convincing without holding much attention, while a dramatic argument can be compelling yet flawed. In a fair item, the sentence must tell you which effect matters.
Plausible and possible
Plausible means reasonably capable of being true on the available facts. It is stronger than bare possible, which only says something can happen or be true. Plausible does not mean proved, probable, or honest.
Weak: The report gives a possible reason for the delay.
More precise: The report gives a plausible explanation for the delay, although the evidence is incomplete.
The rewrite adds a reasoned judgment. It still does not claim certainty.
Tenable and plausible
Tenable means capable of being maintained or justified. It commonly describes a position, argument, or explanation that can survive challenge. Plausible says an account could reasonably be true. An explanation may sound plausible at first but cease to be tenable after contrary evidence appears.
The boundary is useful, but it is not absolute. Some explanations can be both. A good item gives decisive context, such as new evidence that makes a position impossible to defend.
Understanding is only the first step.
Lyra Practice helps you retrieve and use high-value workplace expressions in realistic situations until they feel natural.
Start a practice session →Par for the course and typical
Par for the course is a fixed idiom meaning normal or unsurprising in a given situation. It often carries mild resignation about an inconvenient recurring pattern. It does not mean good, acceptable, or unavoidable.
Typical is broader and more neutral. The form is fixed: That is par for the course, not par for course. Before choosing the idiom, make sure the text establishes a recurring pattern rather than a one-off surprise.
On balance and overall
On balance introduces a judgment reached after relevant factors have been weighed together: On balance, the benefits outweigh the costs. Overall can give a general view without foregrounding that weighing process. They often overlap, so use surrounding evidence rather than treating one as automatically wrong.
Worked eight-gap cloze
Read the full text before choosing. The passage and options below are original practice, not Cambridge sample material.
A museum changes its late-opening plan
When a city museum began opening late on Fridays, managers expected younger visitors to arrive after work. The idea seemed (1) ______: it could reasonably work, although there was no proof yet. Early attendance was modest, but the team did not immediately (2) ______ the plan. Instead, it commissioned short interviews.
The findings made a (3) ______ case for changing the programme. Visitors liked the later hours, yet many said the talks ended before they could arrive. One curator offered an especially (4) ______ comparison with a neighbouring cinema, whose main events began an hour later. Moving the talks therefore appeared more (5) ______ than cancelling them.
Some disruption during the trial was (6) ______, since security and cleaning schedules had to change each week. Delays were, as one manager put it, (7) ______. (8) ______, the team kept the late opening but moved the talks and simplified the booking process.
- A prevalent B plausible C detrimental D ambiguous
- A rule out B carry out C look into D put across
- A compelling B compulsory C compelled D compulsive
- A opposite B apposite C ambiguous D prevalent
- A tenable B detrimental C prevalent D ambiguous
- A at balance B in course C to be expected D on the whole
- A par for the course B par of the course C under the course D course by course
- A On balance B In balance C At balance D By balancing
Answer and evidence grid
| Gap | Answer | Main evidence | Why it wins |
|---|---|---|---|
| 1 | B, plausible | Shade of meaning | The text says the idea could reasonably work, although there was no proof yet. It does not yet say the idea was defensible after challenge. |
| 2 | A, rule out | Phrasal verb | Rule out a plan means reject it as an option. Carry out would mean implement it, which the museum had already done. |
| 3 | A, compelling | Collocation and shade | A compelling case for changing is a natural pattern and describes persuasive force. The other forms change the meaning or grammar. |
| 4 | B, apposite | Register and collocation | A formal report praises a comparison that fits the point closely. The alternatives express opposition, multiple readings, or common occurrence. |
| 5 | A, tenable | Shade of meaning | The option can be maintained or justified after the interview evidence. The other choices do not describe a defensible course of action. |
| 6 | C, to be expected | Fixed phrase | The phrase means unsurprising in the stated trial conditions. The other combinations are not established phrases. |
| 7 | A, par for the course | Idiom | The text establishes repeated trial disruption, and only A preserves the fixed form. It does not say the delays were acceptable. |
| 8 | A, On balance | Fixed phrase | The final choice follows a weighing of benefits and problems. The phrase is fixed; the other forms do not perform this job. |
The guided comparison above still matters: appropriate comparison is possible English. It is not used as a wrong option in gap 4 because the words overlap. A fair answer key needs grammar, collocation, context, or word form to rule an option out.
Common mistakes
- Choosing by tone: a rarer word is not automatically the answer.
- Reading only the words beside the gap. Evidence may appear in the next sentence.
- Treating a plausible claim as proved, or a compelling argument as true.
- Assuming par for the course means a poor result should be accepted.
- Using apposite as a verb or confusing it with opposite.
- Rejecting an overlapping synonym without finding a grammatical, collocational, or contextual reason.
Quick check
For each item, identify the answer or answers licensed by the evidence, then name the evidence type.
After three audits found the same weakness, the claim that it was a one-off error was no longer ______. Which two options can fit, and what does each emphasize?
A plausible B tenable C compelling D overallThe essay's closing quotation was particularly ______ to its argument about memory.
A apposite B opposite C compulsory D prevalent______, the cheaper plan created more risk than value.
A At balance B On balance C Par for course D In overall
Answers: 1 A and B because the repeated finding makes the claim neither reasonably believable nor defensible; plausible emphasizes credibility, while tenable emphasizes defensibility. 2 A because the formal pattern is apposite to. 3 B because a weighed judgment follows.
Fresh practice
Write an original 90–120-word cloze about a public library testing a quiet study zone. Create four gaps: one collocation, one fixed phrase, one phrasal verb, and one shade-of-meaning choice. Give four options per gap. Then underline the exact words that rule out each wrong answer. Do not make an overlapping synonym wrong only because another word sounds more advanced.
Sources
- https://www.cambridgeenglish.org/exams-and-tests/qualifications/advanced/format/
- https://www.cambridgeenglish.org/exams-and-tests/qualifications/advanced/preparation/
Related
- Compelling vs Convincing
- Natural Collocations for Compelling at Work
- Natural Collocations for Par for the Course at Work
- Equivocal vs Ambiguous: What’s the Difference?
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