Changing one short particle can change an entire event. A team looks into a complaint when it investigates it, looks over a document when it checks it, and looks past a defect when it chooses not to let that defect control its judgment. Topic alone cannot select the answer.
Cambridge C1 Advanced Reading and Use of English Part 1 contains one text with eight gaps and four options per gap. Cambridge identifies phrasal verbs alongside collocations, idioms, fixed phrases, and shades of meaning as possible vocabulary targets. This article focuses on particle contrasts that often occur in accounts of investigation and organisational change.
Continue with the Cambridge C1/C2 vocabulary practice hub or browse the wider Exam English collection.
Treat the phrasal verb as a complete frame
Do not reduce look into to “look plus a particle.” Record the unit with its complement and a boundary:
- look into + problem: investigate it;
- rule out + option/cause: exclude it;
- carry out + plan/test: perform it;
- put off + event/person: postpone the event or discourage the person;
- phase out + product/practice: remove it gradually;
- bring about + result: cause it;
- hold up + process: delay it;
- see through + plan/deception: continue to completion or detect the truth behind it.
The noun after the gap matters. You can carry out an inspection, but not normally carry on an inspection when you mean perform it from start to finish. You can carry on with an inspection when it has already begun and continues.
Eight useful contrasts
Look into and look over
Look into means investigate a matter whose cause or truth is not yet known. Look over means inspect or read something, often fairly quickly. A complaint is looked into; a draft can be looked over. An investigator may look over invoices while looking into suspected overcharging.
Rule out and rule on
Rule out excludes a possibility. Rule on means make an official decision about an issue. A laboratory test may rule out contamination; a judge may rule on whether evidence is admissible. Negation reverses the practical message: cannot rule out means the possibility remains open.
Carry out and carry on
Carry out means perform a task, instruction, test, or plan. Carry on means continue, often intransitively or with with + noun. Compare “They carried out the survey” with “They carried on with the survey after lunch.”
Put off and call off
To put off an event is to postpone it. To call off an event is to cancel it. A new date makes postponement clear; a statement that the event will not happen supports cancellation. Put someone off has another meaning: make that person unwilling or less enthusiastic.
Phase out and wipe out
To phase out a system is to withdraw it gradually. To wipe out something is to destroy or eliminate it, often suddenly or completely. A two-year replacement schedule phases equipment out. A fire may wipe stock out.
Bring about and bring up
Bring about means cause a change or result. Bring up can introduce a topic, raise a child, or cause content to appear on a screen. A policy can bring about improvement; a participant can bring up a concern.
Hold up and hold back
Hold up can delay progress: missing permission held up the project. Hold back can restrain a person or thing, withhold information, or limit progress. Context and object determine the reading. A missing signature holds up approval; an organisation may hold back findings.
See through and follow through
To see a plan through is to continue until it is completed. To see through an excuse is to recognise deception. To follow through on a promise is to take the action previously promised. The object and particle position guide the interpretation.
Original eight-gap cloze
This passage is original practice, not Cambridge sample or live-exam material.
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 →A community workshop changes its booking system
When members complained that popular sessions appeared full within seconds, the trustees agreed to (1) ______ into the booking process. They asked an independent technician to (2) ______ out a series of tests and (3) ______ over the access logs.
The tests (4) ______ out deliberate interference but revealed that an old server was slowing each request. Missing time stamps had also (5) ______ up the inquiry for several days. The trustees considered cancelling the autumn programme, yet decided merely to (6) ______ off its opening until the server had been replaced.
The replacement was introduced gradually so that staff could (7) ______ out the old system without losing existing reservations. Together, these changes (8) ______ about a noticeable reduction in failed bookings.
- A look B see C take D turn
- A carry B carry on C put D follow
- A look B look into C rule D make
- A ruled B ruled on C looked D saw
- A held B held back C brought D put
- A call B put C wipe D see
- A phase B wipe C rule D bring
- A brought B brought up C carried D held
Answers and rationales
A, look. With the fixed particle into, look into the booking process means investigate it. See into does not carry that meaning; the other verbs do not complete the frame.
A, carry. A technician carries out tests, meaning performs them. Carry on would need a different structure and would mean continue. The fixed out after the gap is part of the answer frame.
A, look. The technician looks over the access logs, meaning examines them. Look into would require replacing the already printed over and would foreground investigation of a problem rather than inspection of the records.
A, ruled. The completed phrase ruled out deliberate interference excludes that cause. Ruled on would mean issued an authoritative decision about it, not eliminated it through tests.
A, held. The fixed particle produces held up the inquiry, meaning delayed it. Held back the inquiry would suggest restraint but is not licensed by the missing-records cause in this frame.
B, put. The programme opening is postponed until a condition is met, so it is put off, not called off. Cancellation would not include a later opening after replacement.
A, phase. The text explicitly says the transition was gradual and reservations were retained. Staff therefore phased out the old system. Wipe out would imply complete, possibly abrupt destruction.
A, brought. The changes caused a reduction, so they brought about it. Brought up would mean introduced it as a topic, which conflicts with the result meaning.
Object position is evidence
Many of these verbs are separable with noun objects:
- rule the cause out / rule out the cause;
- put the launch off / put off the launch;
- phase the system out / phase out the system;
- see the plan through / see through the plan.
With a pronoun, separation is normally compulsory: rule it out, put it off, phase it out, see it through. Not rule out it. A Part 1 gap can therefore test syntax as well as meaning.
Position also prevents ambiguity. See the plan through clearly means complete it. See through the plan can more readily suggest recognising what lies behind a scheme. The exact distribution is flexible in natural use, but pronoun placement is a dependable grammatical constraint.
C1 precision: event, direction, and timescale
These phrasal verbs encode more than a broad topic.
- Event: investigation, performance, postponement, removal, or causation.
- Direction: rule out closes a possibility; cannot rule out keeps it open.
- Timescale: phase out is gradual; wipe out is complete and often abrupt.
- Completion: see through reaches the end; carry on merely continues.
- Speech versus cause: bring up introduces a subject; bring about causes a result.
At C1, context usually supplies a concrete clue. “Over the next two years” signals gradual change. “A replacement date was announced” distinguishes postponement from cancellation. “Tests showed that X was impossible” supports exclusion.
Mini practice: select and explain
- Because the venue is unavailable on Tuesday, organisers have put off / called off the lecture until Thursday.
- The inquiry could not rule out / rule on accidental damage, so that explanation remains possible.
- Please look into / look over this two-page draft and mark any typing errors.
- Despite losing its original sponsor, the group saw / looked the restoration through.
- The regulator will rule on / rule out the appeal next month; until then, no official decision exists.
- A software fault held up / held back publication for forty-eight hours.
Answers: 1 put off, because a later date is given; 2 rule out, because the cause remains possible under negation; 3 look over, because a document receives a check; 4 saw, because the project was completed; 5 rule on, because the regulator will decide the appeal; 6 held up, because the fault delayed an event.
Common errors
- Choosing from the main verb and ignoring the particle already printed after the gap.
- Treating call off and put off as interchangeable even when a new date is stated.
- Reading cannot rule out as “exclude.” Its polarity is the opposite.
- Using carry on a test when the intended meaning is perform the test.
- Missing the gradual meaning in phase out.
- Putting a pronoun after a separable particle: phase out it.
- Assuming that a formal context cannot contain a phrasal verb. Many are neutral and standard.
Create deterministic practice
Start with a contrast, not a list. Write one sentence that makes a new date explicit for put off, another that makes permanent cancellation explicit for call off, and a third in which an event discourages a person for put someone off. The surrounding evidence should do the teaching.
Then test object grammar. Replace the noun with it. If the object must move between verb and particle, record that form. Add a negative only after deciding what it does to the logical direction. “We ruled it out” and “we could not rule it out” lead to opposite conclusions.
Independent practice
Write a 120-word cloze about a museum investigating low attendance and changing its opening hours. Use eight gaps, including look into, carry out, rule out, put off, phase out, bring about, hold up, and see through. For each answer, write a rationale that names the object, time clue, polarity, or result. Make every distractor fail for a visible reason.
Sources
- C1 Advanced exam format — Cambridge English
- C1 Advanced preparation — Cambridge English
- C1 Advanced handbook for teachers — Cambridge English
Related articles
- Cambridge C1 Phrasal Verbs for Use of English
- Cambridge C1 Part 1: Collocations and Shades of Meaning
- Cambridge C1 Open Cloze: One-Word Grammar and Phrases
- Cambridge C1 Key Word Transformations: Keep the Meaning
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