I had ever 和I had never用在句末怎么看？

Question

..........WE also visited Sydney Opera House yesterday . It was the most interesting building I （ )seen.....
A have ever B had never C have never D had ever

Answer 1

I had never意为以前从来没有做过的事情， I had ever意为是在所有做过的事情里面是最……的。追问

这里填had ever吗，感觉两个都行啊

追答

这个句子的大意为：我们也参观了悉尼歌剧院，它是我见过的最有趣的建筑。所以根据这个意思是，说话者之前参观过其他的一些建筑，但是TA认为这是以往以来最有趣的。所以，就像我所解释的一样，应该是 I had ever…。

Answer 2

在这应该填 have never ,　这是个现在完成时，had ever/never是个过去完成时

Answer 3

这里应填have ever. （从过去到现在）我曾见过的最有趣的建筑物。所以用现在完成时。