-----What _____? -----I______my key and can't open the door.
A．happened, lost
B．has happened, lost
C．happens, have lost
D．has happened, have lost
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“-----What _____?-----I______my key and can't open the door. A．happened, lostB．has happened, lostC．happens, have lostD．has happened, have lost…”主要考查了你对 【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】 等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。
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