(2009辽宁大连调研I ______ have been more than six years old when the accident happened. 
#90247
A
shouldn’t
B
couldn’t
C
mustn’t
D
needn’t
推荐题目
 ——Has Jane arrived yet?         ——No, she_______ an hour ago.
#88347
A
was supposed to come
B
must have come
C
should come
D
ought to have come
We __________ our lives had it not been for the policeman.
#87961
A
would have lost
B
should lose
C
might lose
D
could have lost
It is very kind of you to do the washing-up, but you    it.
#88218
A
mustn’t have done
B
wouldn’t have done
C
mightn’t have done
D
didn’t have to do