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TOEIC Link Part 5 — during vs while: The Preposition-or-Conjunction Test

Part 5 blanks during and while as if they were interchangeable time words, but they belong to different grammatical categories — during is a preposition that takes a noun, while is a conjunction that takes a clause. This guide gives the one structural test that decides every item, the noun-vs-clause trigger to read for, the common trap where a gerund tempts you toward the wrong choice, and worked examples with distractor logic.

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____ the quarterly review, the finance team flagged three overdue invoices. The options offer during, while, for, and since, and because all four sit in the "time" bucket in a learner's mind, the choice feels like a coin flip. It is not. The answer is during, and the reason has nothing to do with meaning — it is that the quarterly review is a noun phrase, and only a preposition can attach to a noun. while is a conjunction; it needs a full clause behind it. TOEIC blanks during and while precisely because they translate to the same word in many languages yet behave differently in English grammar. This guide gives you the single structural test that settles every one of these items.

The rule: read what comes after the blank, not what it means

during and while both point at "a period of time when something else happens." The difference is grammatical category, and category is decided by what follows:

  • during is a preposition → it takes a noun or noun phrase: during the meeting, during negotiations, during the holiday season.
  • while is a subordinating conjunction → it takes a subject + verb clause: while the meeting was in progress, while we negotiated, while sales slowed.

So the test is mechanical. Cover the blank and look at the words immediately after it:

  • Noun with no verb of its own? → during
  • Subject doing a verb? → while

During the audit (noun) versus while the auditors reviewed the ledgers (subject auditors + verb reviewed). The meaning is nearly identical; the structure is not, and Part 5 scores the structure. This is the same preposition-versus-conjunction split that decides because-of-style items and other time and cause connectors — a preposition points at a noun, a conjunction points at a clause, and the blank is testing which shape follows.

The trap: a gerund that looks like a clause

The most reliable TOEIC distractor exploits the -ing form. When candidates see during processing the refund, the -ing word feels like a verb, so they reach for while. Wrong on two counts.

processing here is a gerund — a noun made from a verb — so during processing is preposition + noun, which is grammatical: Errors can occur during processing. But the moment you add an object, during processing the refund breaks, because now processing the refund behaves like a verb phrase without a subject, and during cannot govern it cleanly. The idiomatic fix TOEIC rewards is either:

  • during the processing of the refund — force it fully nominal, or
  • while processing the refund — while + participle is a licensed reduced clause (understood subject carried from the main clause).

That last pattern is the exception worth memorizing: while + -ing is correct as a reduced clause (while reviewing the contract, she noticed the error), whereas during + -ing + object is not. If the -ing word has its own object and no article, the answer skews to while, not during. Read for the object — it is the tell.

The business time-frame set TOEIC reuses

Part 5 draws its "period of time" nouns from a small, stable workplace pool. Learn which side of the test each pattern lands on and the guessing stops:

  • during + event noun — during the presentation, during the inspection, during the transition, during peak hours.
  • during + span noun — during the fiscal year, during the probation period, during the warranty term.
  • while + status clause — while the system is offline, while the shipment is in transit, while the office is closed.
  • while + contrast clause — while revenue rose, costs climbed faster (here while means "whereas," a second job the conjunction does that the preposition never can).

That last row matters: while also signals contrast, not just time. While the proposal was thorough, it exceeded the budget means "although." during has no such sense, so any item where the two ideas are opposed rather than simultaneous forces while regardless of what follows — the clause requirement and the contrast meaning point the same way. This concessive use overlaps with the connectors covered in the despite and although concession guide, where the same "clause vs noun" logic separates although from despite.

Worked examples

1. ____ the software migration, users may experience intermittent access delays. (A) While (B) During (C) Meanwhile (D) For

the software migration is a noun phrase — no subject-verb clause behind the blank. A conjunction like While (A) would need the migration was running. Meanwhile (C) is an adverb that joins nothing and cannot open this structure. For (D) marks duration measured in units (for two hours), not a named event. The noun phrase demands a preposition: (B) During.

2. ____ the auditors were reviewing the accounts, the CFO prepared the disclosure notes. (A) During (B) In (C) While (D) Throughout

Behind the blank is a full clause: subject the auditors + verb were reviewing. Prepositions During (A), In (B), and Throughout (D) all require a noun, not a clause. Only a conjunction can head a subject-verb structure: (C) While.

3. Please keep your badge visible ____ your visit to the secure facility. (A) while (B) during (C) whereas (D) as long as

your visit to the secure facility is a noun phrase (visit is the head noun; to the secure facility modifies it — no verb). while (A), whereas (C), and as long as (D) are all conjunctions needing a clause. The noun phrase selects the preposition: (B) during.

4. ____ preparing the year-end report, the analyst discovered a reconciliation error. (A) During (B) While (C) For (D) Amid

The -ing word preparing has an object (the year-end report) and no article, so this is a reduced clause, not a bare noun. During (A) would need During the preparation of the report. Amid (D) and For (C) are prepositions with the same noun requirement. While + participle is the licensed reduced-clause pattern: (B) While.

The 5-second decision procedure

On test day, do not translate during and while into your first language — that is exactly the confusion TOEIC is pricing in. Run the structural test instead:

  1. Look at the first content words after the blank. Ignore what the sentence "means."
  2. Find the verb. Is there a subject doing a verb (the team met, sales fell)? → the blank needs a conjunction → while.
  3. No verb, just a noun phrase (the meeting, the fiscal year)? → the blank needs a preposition → during.
  4. Spot the -ing trap. If you see -ing + an object with no article (processing the claim), treat it as a reduced clause → while. If the -ing word is a bare gerund with an article (during the processing), it is a noun → during.
  5. Check for contrast. If the two halves oppose each other ("although") rather than overlap in time, the answer is while no matter what.

The same read-the-structure discipline decides the deadline prepositions in the by versus until guide: TOEIC is never asking what a time word means in isolation — it is asking whether a noun or a clause follows the blank. Master that one question and during versus while becomes automatic. Drill these preposition-versus-conjunction pairs against the clock inside EnglishBlitz so the structural test fires before the meaning-based guess ever tempts you.