高考英语连词练习42
题目内容

I had been puzzled over the problem for over an hour without any result, ____ all at once the solution flashed across my mind.

2021-07-27

A.while

B.when   

C.then   

D.as

题目答案

试卷相关题目

最新试卷
热门试卷

长理培训客户端 资讯,试题,视频一手掌握

去 App Store 免费下载 iOS 客户端