1.the silhouette of the dress also has curves (that) wave when the person moves.

2. some clothing experts agree (that) koreans are best matched with comvinations of black and white.

3. they also say (that) the contrast suits koreans because their hair and skin tones differ so great.

각각의 that이 무슨 용법인지 가르쳐주세요ㅠㅠ 설명도 부탁드립니다ㅠㅠㅠ