—Where are you going your next vacation?—We decided Europe.A. on forB. for toC. on to

问题补充：

—Where are you going your next vacation?

—We decided Europe.

A. on, for

B. for, to

C. on, to

D. for, on

答案：

A. on, for

B. for, to

C. on, to

(答案→)D. for, on

解析：D “下次度假你打算去那里？”，“我决定去欧洲。”go to sp for vacation“去某地度假”；decide on sth.“决定某事”。