----How about having a picnic in the park on Sunday?-- whatever you want to do is fine

问题补充：

----How about having a picnic in the park on Sunday?

----, whatever you want to do is fine with me.

A. You’re welcome

B. It’s boring

C. It’s up to you

D. It depends

答案：

解析：考查交际用语：A. You’re welcome没关系，B. It’s boring让人厌烦C. It’s up to you由你决定D. It depends那就看情况而定了，句意：--星期天到公园野餐怎样？--那由你决定，你怎么做都行。选C。