may have对过去表示猜测。

2.Before help could get there, the suspects figured out someone was hiding in the bathroom.

figure out计算出; 解决;想出

例句：Could you help me figure out this problem?
      你能帮我解决这问题吗?

      I can't figure out what he was hinting at.
      我想不出他在暗示什么。

3.When the bad guys asked who he was talking to, the brave little boy told them straight up he called 911.

straight up直接，坦率

例句：Mother dished the food up straight out of the saucepan.
      母亲直接用平底锅把饭端上。
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