It has been announced that candidates remain in their seats until all the papers
来源：网络
时间：
推荐文章
It has been announced that candidates ________remain in their seats until all the papers have been collected．
A. can B．will C．may D．shall
试题答案
D
shall用于陈述句的第二、第三人称时，表示说话人的意图、允诺、警告、命令、决心等，意思是“必须，应，可”。译文：据宣布，考生在收卷前必须坐在自己的座位上。