欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

The book was written in 1946, the education system has witnessed great changes. A. since when B. after which C. since then D. during which 【查看更多】

 

題目列表(包括答案和解析)

The book was written in 1946, _____ the education system has witnessed great changes.

A．whenB．during whichC．since whenD．since then

查看答案和解析>>

The book was written in 1946, _______ the education system has witnessed great changes.

A．since thenB．whenC．since whenD．during which

查看答案和解析>>

The book was written in 1946, _______ the education system has witnessed great changes.

A．since then         B．when             C．since when        D．during which

 

查看答案和解析>>

The book was written in 1946, _____ the education system has witnessed great changes.

  A. when                B. during which      C. since when         D. since then

 

查看答案和解析>>

The book was written in 1946, ____ the education system has witnessed great changes.

A．when

B．during which

C．since then

D．since when

 

查看答案和解析>>


同步練習(xí)冊(cè)答案