–Have you decided where to spend your summer holiday?--Not yet. We go to Hong Kong.A. may

问题补充：

–Have you decided where to spend your summer holiday?

--Not yet. We go to Hong Kong.

A. may

B. must

C. should

D. need

答案：

(答案→)A. may

B. must

C. should

D. need

解析：句意：---你已经决定去哪儿度暑假了吗？---还没有。我们或许去香港。肯定句中表把握性不太大的推测用may，故选A。