问题补充:
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
答案:
A. hasn’t flown
B. didn’t fly
(答案→)C. hadn’t flown
D. wasn’t flying
解析:sitting next to me,后置定语修饰The young girl,前面句子用 was ,没做过飞机应是过去的过去。选C