I placed the cake in the fridge.
I placed the cake into the fridge.
Is into more formal? To me in is sufficient because the movement of the cake into the fridge is implied, but I wonder whether in formal writing, into would be more appropriate.
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Sign up to join this communityI placed the cake in the fridge.
I placed the cake into the fridge.
Is into more formal? To me in is sufficient because the movement of the cake into the fridge is implied, but I wonder whether in formal writing, into would be more appropriate.
Neither is more formal, although 'into' is less common and therefore can give the impression of being more formal.
'Into' is used for movement, and while 'in' is acceptable (since as you say the movement is implied) 'into' places the emphasis on the movement and 'in' places it on the final position.