As a graducate in computer science, he ___ to work out the problem.
#89044
A
wouldn't have failed
B
can't have failed
C
mustn’t have failed
D
might not have failed
推荐题目
— Mary’s sister looks very beautiful now.— But she was very ugly before she tidied up her appearance（整容）. You _________ believe it!
#87061
A
shouldn’t
B
mustn’t
C
wouldn’t
D
might not
If there ______ no water, there ______ no life on the earth.
#87991
A
is, would be.
B
was, was.
C
were, would be.
D
were, would have.
My pain ___________ obvious the moment I walked into the room, for the first man I met asked me pitifully:" Are you feeling all right?"
#90020
A
must be
B
must have been
C
could be
D
could have been
“____ I ask you a question ?”“____ you tell me the difference between the two words ? ”
#89760
A
May ; Can
B
Can ; May
C
Could ; Might
D
Must ; May