题目内容
4．All the students _____ know cheating in the exam is not allowed．（ ）| A． | need | B． | may | C． | must | D． | can |
分析 所有的学生都必须知道在考试中作弊是不允许的．
解答 答案：C．
need需要；may可以；must一定，必须；can可能．根据All the students _____ know cheating in the exam is not allowed．可知所有的学生都必须知道在考试中作弊是不允许的，这是法律明文规定的，都必须遵守的，must一定，必须．故选C．
点评 本题考查了情态动词的用法．解答时注意理解句意以及所给选项的意思并作出正确选择．
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