题目内容
4．The problem is too difficult for him．He solve it．（ ）| A． | can't | B． | mustn't | C． | shouldn't | D． | needn't |
分析 这个问题对他来说太难了，他不能解决．
解答 正确答案：A．can't表示不能、不会．mustn't表示不能、禁止．shouldn't表示不应该．needn't表示不必．根据句意这个问题太难了，所以他不能解决，表示一种能力，故选择A．
点评 本题考查情态动词，熟悉每个词含义及用法，再根据语境即可作出选择．
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