孙像帆船银元价格:英语选择题

来源:百度文库 编辑:高校问答 时间:2024/06/30 21:14:46
It is necessary that he ____ these sentences out.
A) write B) writes C) has written D) wrote

请解释一下选项,谢谢!

选a,
这种句型要是虚拟形式,选a也就是should write的省略

a ,虚拟语气should省略

A IT IS NESSARRY THAT 句型虚拟

B
一般的时态对应问题,不要考虑麻烦了.

B