题目内容
9．This pair of glasses ______ be Tony's．He's the only one who wears glasses．（ ）| A． | must | B． | might | C． | can't |
分析 这副眼镜一定是Tony的，他是唯一一个戴眼镜的人．
解答 答案：A．考查情态动词．句意：这副眼镜一定是Tony的，他是唯一一个戴眼镜的人．A．must一定；表示可能性大； B．might 也许；可能性小； C．can't不可能．根据题干He's the only one who wears glasses．他是唯一一个戴眼镜的人．可知这里表推测的可能性很大，即这副眼镜一定是Tony的，故选A．
点评 理解各个选项的含义，及其用法的区别，根据具体内容作答．
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