The lost cat_____(lie)dead among the trees when they found it.
问题描述：
The lost cat_____(lie)dead among the trees when they found it.
答
was lying
句子有when they found it,表示过去具体的某一个时间点,用过去进行时我写的也是这个，但是后面的dead跟前面的解释不通填was lying没错的。dead是做主语补足语的。