高等继续教育 / 基础英语II
正确率：100%
题型描述: 单选题
When they arrived at the airport, the plane ()
A.already took off
B.has already taken off
C.took off already
D.had already taken off
When they arrived at the airport, the plane ()
A.already took off
B.has already taken off
C.took off already
D.had already taken off
参考答案：
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