One expects books kept in the library to be well … not jumbled

Analyze the question

The sentence is: "One expects books kept in the library to be well ____, not jumbled." The underlined word is jumbled, which means mixed up or in disorder. We need the word that is most nearly opposite in meaning to jumbled and that also fits the gap.

Explain the concept

This is an antonym-in-context question. Two checks must both pass:

1. The meaning must be opposite to "jumbled" (disordered, mixed up).
2. The word must fit grammatically and logically after "well" (a past participle, as in "well ____").

Work through the options

• A. Numbered: "well numbered" is awkward. Numbering books is not the opposite of jumbling them.
• B. Documented: this means recorded or supported with evidence. It has nothing to do with order.
• C. Arranged: "well arranged" means put in proper order. It is the direct opposite of "jumbled" and fits the sentence naturally.
• D. Listed: "well listed" is not idiomatic, and listing is not the same as arranging physically.

Answer

"Well arranged" is the opposite of "jumbled" and makes the sentence read correctly: *One expects books kept in the library to be well arranged, not jumbled.

Exam tip

In "opposite meaning plus fill the gap" questions, test each option in the sentence first. Words that sound similar to the context, like numbered or listed, are often distractors. Look for the word that is a true antonym, here arranged versus jumbled, and that also forms a natural phrase with the word before the gap ("well arranged").