Mr.Brown,ourgeographyteacher,

问题详情：

 Mr. Brown, our geography teacher, ________________, for her bag with maps and a globe are already on the teacher’s desk. 

A. must arrive   B. must have arrived   C. can have arrived    D. has arrived 

【回答】

B

知识点：虚拟语气与情态动词

题型：选择题