Would you please give him this message the moment he____(arrive)?_英语解答

Would you please give him this message the moment he____(arrive)?
答案是arrive 我觉得时态错了吧

人气：380 ℃　时间：2020-04-02 22:28:45

解答

填arrives才对.
这是用一个现在时表示将来,he是三单,一个现在时要加s.