There be any difficulty about winning the speech contest now that you’re well prepared for it.
A. mustn’t
B. shan’t
C. shouldn’t
D. needn’t
网友回答
A. mustn’t
B. shan’t
(答案→)C. shouldn’t
D. needn’t
解析：考查情态动词。shouldn’t表示推测，语气弱于must,这一点可由“now that you’re well prepared for it.”推知。