It has been announced that candidates       remain in their seats until all the papers have been collected.
A.shallB.canC.shouldD.must
A

試題分析:考察情態(tài)動詞用法。本題考察了情態(tài)動詞shall的特殊用法,shall還可以可用于二、三人稱的肯定句中?表示說話人給對方的命令、警告、允諾、 威脅等。也可以用于根據(jù)法律法規(guī)?必須做某事。如According to law, you shall give all your money to your daughter。本題正是考試的規(guī)則。句意:據(jù)宣布,所有的考生要坐在原來的位置上直到所有的試卷都被收起來。故A正確。
點評:在平時的學習中既要注意情態(tài)動詞的基本含義,也要注意情態(tài)動詞的特殊意義,如must偏偏,非得;should竟然;mustn’t禁止,千萬不能;等等。情態(tài)動詞Shall用于所有人稱,表示命令,警告,允諾;以及法律規(guī)定中要做的事情。
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