This sentence in English should be either "next year I'm going to the Alps with you", or "next year I'm coming to the Alps with you" (depending on the speaker's location at the time of speaking). There are structures which use 'in' but I suspect they are more complex than wanted for this exercise.
Suggest change the English, with a clue such as "French - in the Alps". This ensures better English, and reinforces that preposition use is different between French and English.
(As always, there may be regional English usage differences, but I am not aware of that being the case here)
