1 . 阅读下面短文，在空白处填入几个适当的单词。

The experts were now fully convinced that the animal was a puma， but where had it come from? As no puma had been reported missing from ant zoo in the country, this one must have been in the possession of a private collector and somehow     1     The hunt went on for several weeks, but the puma was not caught. It is disturbing to think that a dangerous wild animal is still     2     in the quiet countryside.