When I got to the airport, the plane ______.

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问题 When I got to the airport, the plane ______.

选项 A、already took off
B、had already taken off
C、has already taken off

答案B

解析 本题考查动词时态。从句是一般过去时,主句“飞机起飞”的动作发生在“我到达”之前,所以主句要用过去完成时,表示过去的过去。
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