— 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
—Look! The man at the gate be our headmaster. He stands there every morning.—No, it be him. He is holding a meeting in the office now.
#77353
A
must； can’t
B
must; can
C
can’t; mustn’t
D
can’ t; must
—May I smoke here，please?—I am afraid you ．This is a non-smoking area．
#77581
A
can
B
can’t
C
may
D
may not
--- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs.
#63513
A
might have done
B
must have done
C
might be doing
D
must do
---I haven’t got the reference book yet, but I’ll have a test on the subject next month.---Don’t worry. You ______ have it by Tuesday.
#62617
A
could
B
shall
C
must
D
may
We can do a lot to stay healthy. __________, we should eat a balanced(平衡的) diet.
#77891
A
At a time
B
In fact
C
First of all
D
All together