— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.— Oh, it ____ my younger sister. She was in my room at that moment.
#62616
A
must have been
B
should have been
C
could have been
D
may have been
推荐题目
—I can’t stop smoking, doctor. — For your health, I’m afraid you ______.
#77932
A
may
B
can
C
have to
D
need
– Must I clean up the classroom right now, Miss Green?-- No, you ______.
#75722
A
mustn’t
B
can’t
C
needn’t
D
may not
— It’s the classroom! So you ______ know eating is not allowed here.— Oh, sorry.
#63155
A
need
B
will
C
may
D
must
You_____ all those calculations! We have a computer to do that sort of thing.
#63501
A
needn’t have done
B
must not have done
C
shouldn’t have done
D
can not have done