sudden vs instant

[Zalman]

English Language Tests, Intermediate level

ESL/EFL Test #420 "English Slang Idioms (160)", question 4

"I am sorry I am late. I got into a car accident. I was driving home on the highway when, all of a ........., a deer jumped out in front of me. I tried to stop but I still hit it," Craig told his girlfriend.

(a) happen
(b) time
(c) instant
(d) sudden

English Language Tests, Intermediate level

ESL/EFL Test #420 "English Slang Idioms (160)", answer 4

"I am sorry I am late. I got into a car accident. I was driving home on the highway when, all of a sudden, a deer jumped out in front of me. I tried to stop but I still hit it," Craig told his girlfriend.

Correct answer: (d) sudden

Your answer was: incorrect
"I am sorry I am late. I got into a car accident. I was driving home on the highway when, all of a instant, a deer jumped out in front of me. I tried to stop but I still hit it," Craig told his girlfriend.
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It is nat my anser my anser is correct.

Zalman

[Mister Micawber]

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You must have typed `c` by accident.
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Native English teacher at Mister Micawber's