问题
选择题
--- Who told you my address ? --- I don’t remember clearly. It _____ Li Mei.
---It _____ Li Mei. She doesn’t know it.
A．can be; mustn’t be
B．may have been;must have been
C．may have been; can’t be
D．must have been ; can’t have been
答案
答案：C
本题考查情态动词。句中may也许，可能之一，为不肯定的推测；can’t不可能。句意：——谁告诉你我的地址的？——我记不清了，也许是李梅。——不可能是李梅，她不知道。