题目内容
【题目】The plane (land) by the time we got to the airport.
【答案】had landed
【解析】时间状语 by the time we got to the airport意为“我们到达机场之前”，发生在过去，主句的动作“飞机已经着陆”发生在过去的过去，用过去完成时，故填 had landed。
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题目内容
【题目】The plane (land) by the time we got to the airport.
【答案】had landed
【解析】时间状语 by the time we got to the airport意为“我们到达机场之前”，发生在过去，主句的动作“飞机已经着陆”发生在过去的过去，用过去完成时，故填 had landed。