She was so angry at he was doing she walked out and closed the door heavily behind her.A.

问题补充：

She was so angry at he was doing she walked out, and closed the door heavily behind her.

A. what, that

B. that, what

C. that, that

D. what, what

答案：

(答案→)A. what, that

B. that, what

C. that, that

D. what, what

解析：此题重点考查固定句型结构so…that表示如此…以至于…在so的后面可跟形容词或副词的原级。