He-------his teacher the next day/A wants to visit B wanted

B
如果不看the next day,选哪个都可以,因为语法结构是正确的.
但the next day时表示过去时态中的“第二天”,由此可推知,句子的时态应为过去类时态.
如果放在直接和间接引语中来看就会更清楚一些：
He said,"I want to vist my teacher next day."
变为间接引语,则是
He said he wanted to visit his teacher the next day.