—Hi, Johnson, any idea where Susan is?—It's class time, so she       in the classroom now.
#63533
A
can be
B
must have been
C
might have been
D
should be
推荐题目
 He ________ to the cinema last night, for he stayed with me.
#62699
A
mustn’t go
B
shouldn’t have gone
C
could not go
D
couldn’t have gone
Reading in bed isn’t      our eyes. 
#78099
A
good at
B
weak in
C
bad for
D
good for
— Who’s singing in the next room? — It ______ be Mary. She ______ New York. 
#75016
A
mustn’t, is in
B
must, has gone to
C
could, has been in
D
can’t, has gone to