―Excuseme，isJimintheclassroomnow？―He

问题详情：

― Excuse me，is Jim in the classroom now？

― He _____ be in the classroom because I saw him go to the post office just now.

A．must       B．mustn’t         C．can’t        D．needn’t

【回答】

C

知识点：情态动词

题型：选择题