.People in developed countries are supposed ______ more healthy food before than what they have today.
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A
to be had
B
to have
C
had
D
to have had
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In 1960, this was the longest bridge that __________.
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A
was ever built
B
had ever built
C
has ever been built
D
had ever been built
Give me an undisturbed hour and I’ll see the work Tom ___ unfinished.
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A
will leave
B
is leaving
C
has left
D
had left
He complained that this was the third time he _________ of the changes of the meeting.            
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A
is informed
B
was informed
C
has been informed
D
had been informed