I was sleeping when the telephone rang again.It was the third time that I ________ that night.
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A
have been interrupted
B
had been interrupted
C
interrupted
D
had interrupted
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With the help of high technology, more and more substances _________ in the past years.
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A
discovered
B
have discovered
C
had been discovered
D
have been discovered
—Bob, you’re absent-minded!—Oh, I’m sorry I ______ attention to you, Miss Shute.
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A
haven’t paid
B
wasn’t paying
C
am not paying
D
won’t pay
. She insisted that she ______ somebody in the house.
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A
should hear
B
heard
C
hear
D
was heard
How long have you ______ ?
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A
lost your job
B
been out of work
C
been lost your job
D
out of work