Question

—Hi, Johnson, any idea where Susan is? 
—It’s class time, so she          in the classroom now.

A．can be

B．must have been

C．might have been

D．should be

Answer 1

D

这题考查情态动词的用法，should在这儿表示“主观推测、应该”，句意是：Johnson知道Susan在哪里吗？---现在是上课时间，她应该在教室里。