题目内容
12．You _____ tell him．He is fully aware of the danger．（ ）| A． | mustn't | B． | don't need | C． | needn't | D． | can't |
分析 你不必要告诉他，他已经完全意识到危险了．
解答 答案：C
根据回答句"He is fully aware of the danger"可知，"他已经完全意识到危险了"，所以你没有必要告诉他，"needn't"符合题意．"mustn't"意为"禁止，千万不要"，"can't"意为"不能"．
点评 本题考查情态动词．考生在答题时需结合具体语境，做出判断．
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