从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近并能代替的那一项。

— Millions of visitors have a great time in the Expo Garden in Shanghai this year.

— My family plans to go on vacation in Shanghai this summer. [ ]

A. make themselves at home

B. find themselves

C. enjoy themselves

D. help themselves