It was too hard for the firefighters to get close to the burning building. All their attempts to rescue the people trapped were ______.
A.in place | B.in return |
C.in vain | D.in danger |
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It was too hard for the firefighters to get close to the burning building. All their attempts to rescue the people trapped were ______.
A.in place | B.in return |
C.in vain | D.in danger |