I felt somewhat disappointed and was about to leave,___ something occurred attracted my attention.[A] unless [B] until [C] when [D] while为什么选C?请翻译句子

Somewhat felt that the word language cannot express 求正解 I felt I felt somewhat disappointed and was about to leave,___ something occurred attracted my attention.[A] unless [B] until [C] when [D] while为什么选C?请翻译句子 I was disappointed by his indifference more than somewhat这里的somewhat 什么意思?! I felt happy还是I felt happily i only felt I felt so i ever felt before I felt very quality I felt so ashamed of you.felt I have felt it already i felt tired but happy I felt tired but excited ---------------- I felt the same way I felt a little homesick when I lost her I felt regretful.这里的felt应该用fell 还是felt ? i felt very hungry 为什么felt用过去时? I felt worthless,and my life felt meaningless.