Your guess is as good as mine

[reem]

Test No. incompl/elem-29 "Responses (2)", question 7

Mike: 'Do you think he'll be the next President?'
Jane: '.........'

(a) Your guess is as good as mine.
(b) Your guess is better.
(c) My guess is worse.
(d) We must guess harder.

Test No. incompl/elem-29 "Responses (2)", answer 7

Mike: 'Do you think he'll be the next President?'
Jane: 'Your guess is as good as mine.'

Correct answer: (a) Your guess is as good as mine.

Your answer was: incorrect
Mike: 'Do you think he'll be the next President?'
Jane: 'We must guess harder.'
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hi thank you for this free tests
i want to ask what this exprision mean

[Alan]

This expression means I don't know and what you suggest is just the same as I would suggest.
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English as a Second Language
You can read my ESL story Progressive Forms