Please check these sentences using "it won't be long" structure
1/ It won't be long until he gets up to another mischief
2/ With an attitude like that, it won't be long until you get fired
3/ Being such a good worker, it won't be long until Sara gets a new promotion

Thank you

Question

Please check these sentences using "it won't be long" structure
1/ It won't be long until he gets up to another mischief
2/ With an attitude like that, it won't be long until you get fired
3/ Being such a good worker, it won't be long until Sara gets a new promotion

Thank you

Answer

Vernon’s answer is right. I would prefer “before “ instead of “until” in all cases, but “until” is ok.

Answer

1/ It won't be long until he is up to another mischief again.
2/ With an attitude like that, it won't be long until you get fired.
3/ Being such a good (co)worker, it won't be long until Sara gets a promotion (gets promoted).

I put a few suggestions in parentheses (). You can use them or ignore them. It won't change the meaning of the sentence.

Answer

It won't be long until he gets into mischief again.

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