问题补充：
The woman sitting next to me very nervous, for she had never travelled by air.
A. is
B. has been
C. was
D. had been
答案：
A. is
B. has been
(答案→)C. was
D. had been
解析：C 考察动词时态。句意：坐在我旁边的女士很紧张，因为在这之前她从来没有坐过飞机。根据后半句中的had never travelled中的过去完成时，可知是以过去的一个时间为参照物的。故C项符合语境。
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