—Have you decided where to spend your summer holiday?—Not yet. We go to Qingdao.A. mustB.

问题补充：

—Have you decided where to spend your summer holiday?

—Not yet. We go to Qingdao.

A. must

B. should

C. need

D. may

答案：

A. must

B. should

C. need

(答案→)D. may

解析：考查情态动词。根据句意：还没决定，可知我们可能去青岛。故用may，选D。