— It's said a pianist will perform at Poly Theater on Friday evening. Is it Lang Lang?
— Yes, it _______ him. He _______ for a week.

A．must be; has arrived here	B．Can’t; has been here
C．must be; has been here	D．maybe; has arrived here

科目 英语   题型 单选题   难度 中等

知识点： 情态动词的被动语态 时态辨析