---Where is my reference book? It was here a moment ago.---Someone ___ it by mistake.
#89050
A
could have taken
B
must take
C
might take
D
must have taken
推荐题目
English is a language that many people around the world not speak perfectly but at least can understand．
#87217
A
could
B
would
C
will
D
may
for the timely investment from the general public, our company would not be developing so fast as it is.
#87506
A
Had it not been
B
Were it not
C
Was it not
D
Should it not be
——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
The poor boy _____ the test again; in that case, his mother will be very disappointed.
#90149
A
must have failed
B
might fail
C
could have failed
D
should fail