You to the meeting tomorrow if you have something important to do.
A. needn’t to e
B. don’t need e
C. needn’t e
D. don’t need ing
网友回答
A. needn’t to e
B. don’t need e
(答案→)C. needn’t e
D. don’t need ing
解析：句意:如果你有重要的事情要做,明天你就不必来参加会议了.结合语境可知本句中need用作情态动词,后面接动词原形,故选C.