There _____ be any difficulty about passing the exam since you have been working hard for so long time.A mustn't B may not C shouldn't D needn't
热心网友
c,should't 表式推测；根据后文since you have been working hard for so long time.不应该有任何困难；mustn't不用于肯定句中表推测；may not 语气不肯定； needn't 不必意义不对。
热心网友
应该选Ｃ，表示不该＾
热心网友
答案为“C”。“A”的意思是“禁止”“B”为“可能不会”“D”为“不需要”所以结合句意讲只有“C”最合适。