Question

Not until the train pulled into the station          that his suitcase was gone.

A．had he found

B．did he find

C．he had found

D．he found

Answer 1

B

试题分析：考查倒装句：句意：知道火车驶进站，他在发现箱子没有了。Not until是否定意义的词组，放在句首的时候，句子用部分倒装，因为是在火车驶进站后，他才发现箱子没有了，用一般过去式，助动词did提到主语前面，选B。