对新概念句子的一个疑惑

问题描述:

对新概念句子的一个疑惑
the descriptions given by people who claimed to have seen the puma were extraordinarily similar.中间的have seen 改成had seen 是否正确.

如果你一定要用had seen的话,你就必须去掉claimed to :
1 The descriptions given by people who had seen the puma were extraordinarily similar.