题目内容:
--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
参考答案:
答案解析:
--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