unluckily ,he was soon told___he discovered was unimprtant to them一定说理由哟
问题描述：
unluckily ,he was soon told___he discovered was unimprtant to them一定说理由哟
unluckily ,he was soon told___he discovered was unimprtant to themA what that Bwhy what C that why D what why
答
B sth 用what sb用who 否定用that