2. 外语
  3. It has been decided that all the students ______ stay in the classrooms even on Saturday evenings in case they go to Internet ba

It has been decided that all the students ______ stay in the classrooms even on Saturday evenings in case they go to Internet ba

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问题 It has been decided that all the students ______ stay in the classrooms even on Saturday evenings in case they go to Internet bars.
选项 A、must
B、can
C、need
D、shall
答案D
解析 此题考查情态动词的用法。此题易误选A项，受汉语翻译的误导。此处表示所有学生必须待在教室里，不是自己想，而是学校的规定。must表示主观愿望，若有have to则可以用，shall用于第二、三人称肯定句中，表示命令、允诺、警告等。
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