题干
——Why did you eat your words, Jack?
——Sorry, dear. But I really forget where I was______ to meet you.
——Sorry, dear. But I really forget where I was______ to meet you.
A：demanded
B：imagined
C：supposed
D：guessed
答案(点此获取答案解析）
C
沿对角线
折成二面角
，若
，
，
，
