Question

【题目】It was announced that only after the candidates’ papers were collected _____to leave the room.

A. had they been permitted B. would they be permitted

C. that they would be permitted D. that they had been permitted

Answer 1

【答案】B

【解析】

考查倒装和时态。句意：宣布说只有在竞选者的论文都收集完毕，他们才被允许离开。从句Only after 后用倒装，排除CD，又表将来时态，故选B。