—Can you tell me where to spend your winter holiday?—I’m not sure. We go to Yangzhou.A. mu

问题补充：

—Can you tell me where to spend your winter holiday?

—I’m not sure. We go to Yangzhou.

A. must

B. should

C. may

D. need

答案：

A. must

B. should

(答案→)C. may

D. need

解析：句意：你能告诉我你到哪里度过你的寒假吗？我不确定，我可能去扬州。can,could,may meight,可以表示可能性的猜测，must,肯定性的猜测，一定···，can’t,否定猜测，肯定不···。结合句意，还没定好去哪里度假，故是可能性猜测。所以选C。