问题
选择题
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
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。”这句话的意思是：据宣布，考生在收卷前必须坐在自己的座位上。