第1个回答 2009-01-19
This is the best book that i had ever seen.
第2个回答 2009-01-19
This is the best book that I have ever seen.
I have never seen a better book before.
第3个回答 2009-01-19
this is the most wonderful book i have ever met.
第4个回答 2009-01-19
This is the best book that I have ever (read)