--Have you decided where to go for your summer vacation?
--Not yet. We go to Mount Lu. It is a good place for vacation.
A. may
B. should
C. need
D. must
网友回答
(答案→)A. may
B. should
C. need
D. must
解析：情态动词辨析. May可以，可能; should应该; need需要; must必须,一定;句意:你们决定了这个暑假去哪儿了吗?——还没有。我们可能去芦山。那是一个度假的好地方。故选A。