One third of the houses ______ destroyed when a terrible earthquake struck the city last night.
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A
was
B
were
C
has
D
have been
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The officer made his men_________his order at once.
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A
carry out
B
work out
C
make out
D
act out
The bell________ the end of the period rang, __________our heated discussion.
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A
indicating; interrupting
B
indicated; interrupting
C
indicating; interrupted
D
indicated; interrupted