The girl sitting next to me on the plane was very nervous for she before.A. hasn’t flown

问题补充：

The girl sitting next to me on the plane was very nervous, for she before.

A. hasn’t flown

B. hadn’t flown

C. didn’t fly

D. wasn’t flying

答案：

A. hasn’t flown

(答案→)B. hadn’t flown

C. didn’t fly

D. wasn’t flying

解析：句意：在飞机上挨着我坐的女孩很紧张，因为她以前从来没有乘过飞机。结合语境可知下文原因状语从句中描述的是过去某时已经完成的动作，故用过去完成时态，选Ｂ。