2. 外语
  3. The robber had escaped and was nowhere to be found when the police ______.

The robber had escaped and was nowhere to be found when the police ______.

admin2012-01-26  25
问题 The robber had escaped and was nowhere to be found when the police ______.
选项 A、arrived
B、had arrived
C、arrive
D、have arrived
答案A
解析 动词时态。when引导的是时间状语从句。主句是过去完成时，从句用过去时。当警察赶到时，抢匪已经逃离，哪里都找不到了。
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