25. I ______ have been more than six years old when the accident happened. 
#90505
A
shouldn’t
B
couldn’t
C
mustn’t
D
needn’t
推荐题目
—— I haven’t seen Johnson these days.—— I think she _______ a conference in Beijing, but I’m not sure.
#87946
A
should be attending
B
might be attending
C
could have attended
D
must have attended
--Must we hand in our homework now?---No, you ___. You ___ hand them in before Friday.
#88933
A
mustn’t , can
B
needn’t, can
C
can't , can
D
mustn’t, must
If it hadn’t rained so hard last night,it_______ so  cold today.
#86461
A
would’t be
B
hadn’t been
C
weren’t
D
wouldn’t have been
 We ______ the difficulty together, but why didn’t you tell me?
#87353
A
should face
B
might face
C
could have faced
D
must have faced