05年上海高考的两道题，没弄懂,请说的详细一点，考上了清华我请你们吃饭啊

问题描述：

27. There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.
A. mustn’t B. shan’t C. shouldn’t D. needn’t
43. He proved himself a true gentleman and the beauty of his _______ was seen at its best when he worked with others.
A. temper B. appearance C. talent D. character

问题解答：

27 c "shouldn't"解释为不应该
43 d character 性格