(2013·高考新课标全国卷Ⅱ)Since nobody gave him any help，he________have done the research on his own.
#62474
A
can
B
must
C
would
D
need
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(2013·江西鹰潭一中高三一模)What a pity! Considering his ability and experience, he ________ better.
#62423
A
need have done
B
must have done
C
can have done
D
might have done
If you know nothing about the famous program called Where are we going, dad?, you ______be living in a box!
#74221
A
would
B
can
C
must
D
need
I ________ myself more— it was a perfect day.
#62719
A
shouldn’t have enjoyed
B
needn’t have enjoyed
C
wouldn’t have enjoyed
D
couldn’t have enjoyed
—David，is that man your Chinese teacher?—It___________ be him．He’s having a meeting．
#76087
A
mustn’t
B
can’t
C
needn’t
D
won’t