In order to reduce the increasing prices of vegetables , the toll(过路费)           if a truck carrying them passes through a toll station .
#103091
A
cancels
B
is cancelled
C
was cancelled
D
had been cancelled
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The computer looks old, but it _________ just half a year ago.
#104872
A
has been bought
B
will be bought
C
is bought
D
was bought
—Why? Where is the key to the meeting room? —Dear me! You ______ it in the taxi!
#104446
A
had never left
B
didn’t leave
C
never left
D
haven’t left