初三英语定于从句问题This is _____I wanted.中为什么横线上要填the one而不是the one w

This is the one I wanted. This is the one ______I wanted. This is the one that I wanted. This is the one I wanted . This is the one I wanted .和This is the one what I wanted.有什么 this is only one stdent in the school____i wanted to see,横线处 几个英语问题（1）This is one of the best books that ________.这句定语从句中 this is one of the best films中的先行词为什么是films,而不是one? This is (the one/what) I wanted.为什么不能用which 定于从句：this is the best film___been shown this year this is the one 英语 定语从句 1)Is this flat...you one liyed in 2)Is this the only