【单选题】听力原文:M: Ordinarily you never seem to be nervous. But why were you so nervous just now when the professor called on you? W: You know, I didn't enter my house until I found my key at 11 o'clock last nig...
A.
She was afraid of the professor.
B.
She didn't enter her house.
C.
She didn't make full preparations for her lessons.