问题补充:
Mr Smith was so angry at all Bill was doing he walked out angrily.
A. that; what
B. that; that
C. which; which
D. what; that
答案:
A. that; what
B. that; that
C. which; which
D. what; that
解析:第一空:先行词为all,由 that引导定语从句;第二空:that 与前半句中的so呼应,引导结果状语从句。