----What are you going to do on May Day?
---- . If weather permits, I may go mountain-climbing with my friends.
A.Don’t mention it
B.It doesn’t matter
C.Forget it
D.It depends
答案:D
题目分析:A. Don’t mention it不用谢,B. It doesn’t matter 没关系,C. Forget it忘了吧,D. It depends那就看情况而定了,句意:--五月节你准备做什么?--那就看情况而定了,如果天气允许的话,我就去和朋友爬山。所以选D。