meaning of "There is no guessing"

[Rich7]

Test No. incompl/elem-30 "Responses (3)", question 7

Mike: 'I wonder what she'll get up to next.'
Jane: '.........'

(a) There's no finding.
(b) There's no knowing.
(c) There's no guessing.
(d) There's no seeing.

Test No. incompl/elem-30 "Responses (3)", answer 7

Mike: 'I wonder what she'll get up to next.'
Jane: 'There's no knowing.'

Correct answer: (b) There's no knowing.

Your answer was: incorrect
Mike: 'I wonder what she'll get up to next.'
Jane: 'There's no guessing.'
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can you explain both expressions?

thks
rich7

[Yo]

Both basically are the same thing, you don't know or can't guess what she will do.

[Rich7]

what she will get up to? could explain this meaning?

thanks....

[Yo]

hmm well i dont think i have ever heard that phrase before but i have heard," what do you think she well be up to" meaning what do you think she will be doing. get has to be replaced with be, then it makes sense

[Rich7]

well here's a job for mr. torsten, think so?

[Torsten]

Well, actually this is also a question for Alan because he our expert when it comes to using phrasal verbs one of which is get up to.

If you talk about what someone gets up to, you are referring to what they do, especially when it is something you do not approve of.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Snoopy_Blah_Blah]

'I wonder what she'll get up to next

Is it an idiom? I understand the meaning, but I've never encountered an expression like that. Is is British or American English?
Why not "I wonder what she'll be up to next"? Or both are applicable?

[Seanmen]

[Alan]

Hi,

'There's no knowing' is a set expression whereas 'there's no guessing' isn't a set expression. 'Get up to' in the test question suggests she will do something unusual, unexpected.

Alan
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English as a Second Language
You can read my ESL story Progressive Forms

[Marica]

Hi Alan,

Excuse me I would like to know what "set expression" means.It means that it is not correct using it?

Thank you,
Marica

[Sonia*]

Hi Alan,
I have got the same question.I have noticed the word "set expression" many times.Please tell the meaning of "set expression.

Thank you,
Sonia*

[Alan]

Hi,

'Set expression' is an expression that is used frequently in the language and is now accepted as part of the language. As I said above, the common expression 'There's no knowing' is accepted as a recognised expression but 'there's no guessing' sounds strange and is not accepted as normal and is therefore not a set expression.

Alan
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English as a Foreign Language
You can read my EFL story Party Conferences

[Sonia*]

Many thanks sir.