A rescue worker risked his life saving two tourists who had been trappedhad been trapped(trap) in the mountains for two days.
【考点】过去完成时;过去完成时的被动语态.
【答案】had been trapped
【解答】
【点评】
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发布:2024/12/5 19:30:2组卷:133引用:17难度:0.8