that was -------I wanted A that Bwhat Cwhen 选哪个?为什么?

问题描述:

that was -------I wanted A that Bwhat Cwhen 选哪个?为什么?

选B,这是一个表语从句,主句是that was ***从句是 what I wanted...what是做wanted的宾语,在表语从句中引导词是不可以省略的.而且这个宾语只能用what,不能用that来引导.