I wrote a letter to John for his help during my high school years，without which I ________ the college entrance exam.
#86497
A
would fail
B
would have failed
C
should fail
D
must have failed
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If you ________ home without a word, your parents wouldn't be so worried now.
#86490
A
didn't leave
B
couldn't have left
C
hadn't left
D
shouldn't leave
—I do enjoy my present job as an engineer.—Well，I would also be an engineer if I my major when I was at college.
#86830
A
could have changed
B
should change
C
hadn't changed
D
were to change
He knows it is high time that he ________ at once.
#87730
A
quits smoking
B
quitted smoking
C
should quit to smoke
D
quitted to smoke
Watch out for these animals! They could be terrified ______ a sudden loud noise.
#86944
A
being there
B
should there be
C
there was
D
there have been