_

are you one of the many who lie awake at night listening to anything that makes the slightest noise ? or are you aroused from sleep in the middle of the night only to spend the rest of it tossing and turning ? insomnia is one of the most commonyet most misunderstood problems for which otherwise healty and normal people seek professional help.

1. to : 여기에서 to의 용법이 어떻게 되나요 ???

2. for which : 이문장에서의 for which가 애 쓰였는지 설명 좀 부탁드리겠습니다..

친절하고 정확한 답변 기다리겠습니다. ^^ ㅜㅠㅜㅠ