2015年高考正在紧张的备考阶段，高考英语的学习依然至关重要，不仅靠知识的积累和运用，同时也需要学习的方法和做题的技巧，为了帮助广大考生攻克高考英语的学习，比网校在线高考网为大家整理了高考英语复习资料和解题技巧，以下是《高三英语单词天天看(69)》，供考生们参考学习。
The young girl sitting next to me on the plane was very nervous. She_____before.
A. hasn't flown
B. didn't fly
C. hadn't flown
D. wasn't flying