He was so angry at all _______ he was doing ________ he walked out.
A. what; that B. that; that
C. that; what D. what; what
He was so angry at all _______ he was doing ________ he walked out.
A. what; that B. that; that
C. that; what D. what; what
B
第一空中由that引导定语从句,第二空后是so ... that...引导的结果状语从句。