Final answer:
To correct the sentence, change 'Whose' to 'Who's'.
Step-by-step explanation:
The correct answer is to change 'Whose' to 'Who's'.
The sentence should be: 'Who's going to the skating rink tomorrow?'
'Who's' is a contraction of 'who is', which is the correct form to use here to inquire about the person going to the skating rink. 'Whose' is used to show possession, but in this case, we are asking about the identity of the person going, not who possesses something.
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