问题详情：
By the time I saw the angry expression on his face, I ______ exactly what I was having to face. But not for a moment ______ I should quit.
A. had known; I thought B. have known; had I thought
C. would know; I would think D. knew; did I think
【回答】
D
知识点：动词时态与语态
题型：选择题
