'walk in single file' sv 'walk in solitary file'

[Manuell]

Synonyms Lesson, Advanced Level

ESL/EFL Test #110 "Synonyms for alone and lonesome", question 5

As the path was very narrow and dangerous, the guide told them they should walk in ......... file.

(a) alone
(b) solitary
(c) single
(d) detached

Synonyms Lesson, Advanced Level

ESL/EFL Test #110 "Synonyms for alone and lonesome", answer 5

As the path was very narrow and dangerous, the guide told them they should walk in single file.

Correct answer: (c) single

Your answer was: incorrect
As the path was very narrow and dangerous, the guide told them they should walk in solitary file.
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My name is Manuell. Why my answer is incorrect.

[Alan]

Hi Manuel,

You need the expression 'single file', which means one person behind the other because the path is not wide enough for two people to walk side by side - it is too narrow.

Alan
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English as a Second Language
You can read my ESL story Present Simple