1-C. I was on the train heading home feeling really excited, but at the same time pretty anxious.I was on the train heading home feeling really excited, but at the same time pretty anxious.
2-C. It's a shame that you felt too anxious to travel alone.It's a shame that you felt too anxious to travel alone.
残念だ、あなたが余りにも不安を感じていることがダヨ、一人で旅行することにダヨ。
3-C. Most people feel anxious if they have nothing to distract their minds while waiting.Most people feel anxious if they have nothing to distract their minds while waiting.