高考英语连词练习29
题目内容

They were surprised that a four-year-old boy should work out such a difficult problem ________ they themselves couldn't.

2021-07-27

A.once

B.then

C.while

D.if

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