when can I see you ,Mr Black three o "clock this afternoon?oh ,no_英语解答

when can I see you ,Mr Black three o "clock this afternoon?oh ,no .I ------a meeting then.
A、will have B、 will be having C、 am having D、 have

人气：181 ℃　时间：2020-05-11 20:29:50

解答

答案选 C、 am having
用现在进行时表将来那A为什么不行因为这里有提示词then，那时，所以必须用现在进行时表将来。