—  You mean the position is still vacant?

— Yes, but you must know our job is very demanding. 

—  _____.[ ]

A. With pleasure

B. I don't mind

C. Don't mention it

D. That's all right

根据语境，仿照画线句子，接写句子，构成语意连贯的一段话。

　　在开满鲜花的小道上，一群群活蹦乱跳的少年追逐嬉戏是幸福的；在铺满黄叶的公园里，一对对银发夫妇相携漫步是幸福的；__________________，__________________；__________________，_________________。