(05/25/21)

-난 널 도와줄 수 있어.

 I can help you. ​

-친구들과 보통 어디에서 시간을 보내?

 Where do you hang out with your friends? -> Where do you usually hang out with your friends?

=> Your sentence has a correct grammatical structure, but this has the correct usage/ expression.

-화장실이 어디인지 알려 줄래요?

 Can you tell me where is the toilet? -> Could you tell me where the restroom is?

=> Corrected : The sentence is corrected grammatically. 

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