Difference between occupied and engaged

[TUGBA]

Test No. errors/advan-4 "Not the slightest idea", question 10

I'm afraid the number you want is occupied at the moment so I suggest you ring back later.

(a) afraid
(b) occupied
(c) suggest
(d) ring

Test No. errors/advan-4 "Not the slightest idea", answer 10

I'm afraid the number you want is engaged at the moment so I suggest you ring back later.

Correct entry: engaged
The error was: (b) occupied
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What is the diffrence between occupied and engaged?

[Mister Micawber]

.
We use occupied for a room (like a toilet), and engaged for a telephone. They both mean busy.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mister Micawber

[Guest]

correct sentence:
I'm afraid the number you want is engaged at the moment so I suggest you ring back later.

Correct entry: engaged
The error was: (b) occupied

You have found the error but your entry is incorrect.
your sentence:
I'm afraid the number you want is busy at the moment so I suggest you ring back later.
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If 'engaged' means 'busy' why is the answer incorrect?

[Torsten]

You are right, busy can be used instead of engaged here and we'll add this option as another correct answer.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary