问题补充：
You to the meeting tomorrow if you have something important to do.
A. needn’t to come
B. don’t need come
C. needn’t come
D. don’t need coming
答案：
A. needn’t to come
B. don’t need come
(答案→)C. needn’t come
D. don’t need coming
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.
