【题目】—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
在线课程【答案】D
【解析】考查情态动词的用法。A. can be可能，可以是；B. must have been一定（对过去事实肯定的推测）；C. might have been可能（对过去事实肯定的推测）；D. should be应该是。句意：—知道苏珊在哪里吗？—现在是上课时间，她应该在教室里。故答案选D。