—Hi, Johnson, any idea where Susan is?  —It’s class time, so she          in the classroom now.
#87475
A
can be
B
must have been
C
might have been
D
should be
推荐题目
——You didn’t invite Mary to the ball? ——____ her, too?
#89330
A
Must I invite
B
Should I have invited
C
Must I have invited
D
Should I invite