TOEIC Link Reading Part 5 — Preposition vs Conjunction vs Adverb Slotting

There is a family of TOEIC Link Part 5 questions that looks like a vocabulary test and is actually a grammar test. The four choices are words that all point in the same direction — cause, contrast, or addition — so translating them into your first language gets you nowhere. Because, because of, and due to all mean roughly "for this reason." Although, despite, and however all signal contrast. If you pick by meaning, you will circle two or three choices as equally good and then guess. The way out is to stop asking what does this word mean and start asking what kind of word is this, and what structure does it require. Once you sort the choices into prepositions, conjunctions, and adverbs, the sentence itself tells you which one fits.

The three categories and what each one needs

Every word in this question family belongs to one of three grammatical types, and each type attaches to the sentence differently:

• Prepositions are followed by a noun or noun phrase (including a gerund). Examples: because of, due to, despite, in spite of, during, owing to. → "The flight was delayed because of the storm." (storm = noun)
• Subordinating conjunctions are followed by a full clause (subject + verb). Examples: because, although, while, since, when, if. → "The flight was delayed because a storm moved in." (a storm moved in = clause)
• Adverbs / transition words connect to a separate independent sentence, usually set off by a period or semicolon. Examples: therefore, however, nevertheless, meanwhile, otherwise. → "A storm moved in; therefore, the flight was delayed."

The single most useful habit you can build is this: when you meet one of these blanks, do not look at the blank first — look at what comes immediately after it. A noun after the blank means you need a preposition. A subject-plus-verb after the blank means you need a conjunction. A complete second sentence on the other side of a period or semicolon means you need an adverb. This is the same "read the slot, not the word" discipline that governs word-form and part-of-speech questions — you decide grammatically before you ever weigh meaning.

Work an example the mechanical way

Consider a typical stem:

"____ the heavy rain, the outdoor event proceeded as scheduled." (A) Although (B) Despite (C) However (D) Because

Notice how meaning traps you: three of the four are "contrast-ish," and because is the only clearly wrong meaning — so a meaning-first reader narrows to three and guesses. Now do it grammatically. What follows the blank? "the heavy rain" — a noun phrase, no verb. That single fact eliminates although (conjunction, needs a clause), eliminates however (adverb, needs a separate sentence), and eliminates because (conjunction, needs a clause). Only despite is a preposition that takes a noun. The answer is (B), and you reached it without deciding what the sentence "means" — you decided what its structure allowed. That is the reliability grammar gives you over translation.

The contrast trio you must keep straight

The most heavily tested cluster is the contrast group, because English offers one word of each type with nearly identical meaning:

Memorize the columns, not the rows. On test day you will not be asked "what means contrast" — you will be handed a blank with a clause on one side or a noun on the other, and the column tells you which word can legally sit there. When two choices come from the same column (e.g., both although and while as conjunctions), then you fall back to meaning to break the tie — but only after grammar has narrowed the field. Choosing correctly among same-category transitions is itself a skill, and it overlaps directly with Part 6 connecting-word selection, where the same trio reappears across sentence boundaries.

Watch the comma and the semicolon

Punctuation is a free clue the test rarely hides:

• A semicolon almost always calls for a transition adverb: "Sales fell in the first quarter; nevertheless, the annual target was met."
• A blank at the very start of a sentence followed by a comma and then a full clause is usually a subordinating conjunction: "Although the budget was tight, the team delivered on time."
• A blank followed immediately by a noun with no verb is a preposition, comma or not.

Let the punctuation and the part of speech after the blank make the decision jointly. When you train yourself to read the environment around the blank before you read the choices, these items stop being vocabulary guesses and become quick structural checks — the same environment-first reading that speeds up vocabulary-in-context elimination.

Practice routine

For the next two weeks, whenever you meet a because/because of/therefore-type blank, force yourself to write one letter beside each choice: P for preposition, C for conjunction, A for adverb. Then underline the first word after the blank and label it noun, clause, or new-sentence. Cross out every choice whose letter does not match. You will find that the mechanical pass alone answers most items, and on the rest it leaves you a clean two-way tie you can settle by meaning. Speed on Part 5 comes not from reading faster but from deciding on structure first — and this question family is where that discipline pays the biggest dividend.