---We are going to have a picnic tomorrow. 

问题补充：

---Wearegoingtohaveapicnictomorrow.Itwon'train,willit?

---______.A.Yes, it won'tB.No, it willC.Yes, I think it notD.No, I don't think so

答案：

D解析回答时应根据实际情况,用了yes后面不能跟not, 用了no时,后面一定要跟not.