31.By the time we _____the airport, the plane_____.
A.arrived at; had taken off | B.had got to; took off |
C.got to; had taken away | D.arrived at ; had taken away |
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31.By the time we _____the airport, the plane_____.
A.arrived at; had taken off | B.had got to; took off |
C.got to; had taken away | D.arrived at ; had taken away |