问题
选择题
— 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．maybe; has been here
C．must be; has been here
D．maybe; has arrived here
答案
答案：C
考查情态动词和延续性动词的用法。第一空表示很有把握的推测，用情态动词must加be，may be 表示可能性小的推测，但是却不能用maybe，因为maybe是副词，而此句中缺少连系动词；第二空后面有表示时间段的for a week，它需要跟延续性动词连用。
请根据以上资料，填制进口报关单以下栏目：