"you have no business"

[Pressman]

Test No. incompl/inter-53 "Business Expressions (2)", question 1

I've warned you before that you shouldn't get involved in this matter and you have ......... business discussing it.

(a) some
(b) little
(c) no
(d) not

Test No. incompl/inter-53 "Business Expressions (2)", answer 1

I've warned you before that you shouldn't get involved in this matter and you have no business discussing it.

Correct answer: (c) no

Hello everybody! I don't get the expression 'You have no business' :oops: Tell me, please.
Thank you in advance

Pressman

[Torsten]

Hi Pressman,

In the sentence you are referring to you could also say '... and now you have no right to discuss it.'

I've warned you before that you shouldn't get involved in this matter and you have no business discussing it.

TOEIC listening, photographs: Prayer time

[Wanderer]

It seems to be a long time. But does the expression mean it's none of your business to discuss....
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Let my English be checked!