A . when did the next underground arriveB . when the next underground arrivedC . when will the next underground arriveD . when the next underground will arrive
— Yes. We are going to visit the red boat on South Lake in Jiaxing next week.
A . why we'll celebrate our Party's 100th birthdayB . how we'll celebrate our Party's 100th birthdayC . when will we celebrate our Party's 100th birthdayD . where will we celebrate our Party's 100th birthday