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

熱心網友

c,should't 表式推測；根據后文since you have been working hard for so long time.不應該有任何困難；mustn't不用于肯定句中表推測；may not 語氣不肯定； needn't 不必意義不對。

熱心網友

應該選Ｃ，表示不該＾

熱心網友

答案為“C”。“A”的意思是“禁止”“B”為“可能不會”“D”為“不需要”所以結合句意講只有“C”最合適。