— 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
He _______ have taken your car by mistake because he didn’t have the keys.
#63034
A
mustn’t
B
shouldn’t
C
couldn’t
D
needn’t
— May I smoke here?— No, you ________. Can’t you read the sign “NO SMOKING”?
#62643
A
mustn’t
B
won’t
C
needn’t
D
Don’t have to