Question

thank goodness it is short journey change into negative sentence

Answer 1

Heya!
here's your answer!
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Question:
Thank goodness, it is a short journey.

Converting it into negative firm requires addition of certain negative words which show interrogation. For instance; not, no, etc.

Answer:
Oh God! It is a long journey.

Or,

Thank goodness, it's not a short journey.

Or,

Thank goodness, It is a long journey.

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Thanks!

Answer 2

The most appropriate answer :

Thank goodness! It wasn't a long journey.