题干
--- Who told you my address ? --- I don’t remember clearly. It _____ Li Mei.
---It _____ Li Mei. She doesn’t know it.
---It _____ Li Mei. She doesn’t know it.
A：can be; mustn’t be
B：may have been;must have bee
C：may have been; can’t be
D：must have been ; can’t have bee
答案(点此获取答案解析）
C
