TOEFL Complete the Words

What the task is

You are shown a single academic paragraph of roughly 70 to 100 words in which ten words have had letters removed. You type the missing letters, only the missing part rather than the whole word.

The pattern is regular enough to prepare for. The opening sentence always arrives complete, so you start with context rather than guesswork. After that, as a general rule, it is the back half of every second word that disappears. Both content words and function words are targeted: nouns, verbs and adjectives carry meaning, while prepositions, conjunctions and articles are recovered almost entirely from grammar.

The topics are academic and range widely across subject areas, but they never require knowledge you were supposed to bring with you. Everything needed to reconstruct a word is in the paragraph.

What it actually tests

The name suggests vocabulary, and vocabulary is part of it, but the task is really about reading at two levels simultaneously. To recover a word you need to know what the sentence means and how the sentence is built, and either alone is usually insufficient.

Consider what happens with a gap like `impor______`. Meaning narrows it to something like importance or important; only the grammar of the surrounding clause decides which. A learner working from meaning alone gets the right idea and the wrong word, and scores nothing for it.

• Academic vocabulary as it behaves in context, not as a list.
• Word structure: which suffix turns this root into the part of speech the slot needs.
• Grammatical patterning: agreement, tense, the preposition a particular verb takes.
• Reading across sentences, because the clue is often in the previous one.

A worked example

Here is a short passage in the task's format, written for this guide. The first sentence is complete; four gaps follow. Try it before reading on.

«Coastal wetlands sit between the land and the sea. They pro______ the shore fr____ storm damage by absorbing wave energy bef______ it reaches inhabited ar____.»

Now the reasoning, gap by gap. This is the sequence worth internalising: not the answers, but the order in which the evidence arrives.

A method that works under time

Read the whole paragraph before filling anything in, including the gapped parts. This feels like a detour and is not: the last sentence frequently disambiguates a gap in the second, and learners who work strictly left to right end up revising earlier answers.

Then take the easy gaps first, wherever they are. Every gap you fill adds context that narrows the ones around it, so the paragraph gets easier as you go. Working in order means meeting your hardest gap while you have the least information.

Leave nothing blank. Even a partial reconstruction from the visible stem is worth attempting, and there is no penalty for being wrong.

• Read the complete paragraph first, gaps and all.
• Fill the gaps you are sure of, in any order.
• Re-read with your answers in place, because errors become audible.
• Check part of speech and number on every content word before moving on.
• Spell it out carefully. This is where recovered marks get thrown away.

Common mistakes

The errors on this task are consistent enough to list, and most are process failures rather than language gaps.

• Writing the whole word instead of only the missing letters. Read the instruction once, carefully, at the start.
• Getting the meaning right and the form wrong: importance for important, analyse for analysis.
• Ignoring the visible stem. The letters already on screen constrain the answer, and a word that does not start with them is wrong however well it fits.
• Skipping function-word gaps as unguessable. They are usually the most guessable.
• Spending two minutes on one gap. It is worth the same as the three easy ones you did not reach.

How to build the skill

The underlying ability here is prediction, and it is trainable outside the exam format. Read academic prose and stop at the end of a line to guess the next word; you will be right more often than you expect, and being wrong tells you exactly which collocations you do not yet own.

For targeted work, take any academic paragraph, delete the second half of every second word, and come back to it a day later. Building the exercise is itself useful, because deciding what to delete forces you to notice which words are predictable and which are not.

Track your errors by type. Whether you are losing marks to vocabulary, to grammar, or to spelling changes what you should do next, and the three are easy to confuse when you only count how many gaps you missed.