问题补充：
Scarcely ourselves in the theatre when the curtain up.
A. had we seated; went
B. we had seated; went
C. seated; had gone
D. did we seated; had gone
答案：
(答案→)A. had we seated; went
B. we had seated; went
C. seated; had gone
D. did we seated; had gone
解析：考察倒装和时态。固定搭配scarcely…when…一…就…；该句式指的scarcely是一个否定词放在句首的时候，句子要使用部分倒装的形式。而且要注意时态的一致性，句意：我们一坐在电影院里，大幕就升了起来。When后面的句子使用一般过去时，我们坐好是在大幕升起之前故使用，过去完成时。故A正确。
