问题描述：
关于can't 和mustn't的选择
1.---May I ask for a week's leave?
----No,you ( ).We'll be very busy this week.
答案是mustn't而不选can
2.You ( ) not go now.You must stay here till 5
答案是can而不选must
我觉得这两句意思差不多啊,所以很迷惑,
1.---May I ask for a week's leave?
----No,you ( ).We'll be very busy this week.
答案是mustn't而不选can
2.You ( ) not go now.You must stay here till 5
答案是can而不选must
我觉得这两句意思差不多啊,所以很迷惑,
问题解答：
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