Three year pain

Three year pain after three year 还是 three year later for year for year three three five year periods He ________for three year. three-year-olds汉语意思 three year 用什么提问 They____india three times this year . three-year's句式对吗? three years old 与 three-year-old 的区别 three-year-old 和 three years old 有什么区别 three-year-old 与 three years old区别