单项选择题
[听力原文] M: Nancy, why were you late for class this morning W: I overslept and missed the bus.
A．She got up late than usual. B．She forgot her class. C．Her clock was half an hour slow. D．The bus was late.
A．He does not understand it. B．He does not like it. C．He is used to it. D．He does not have to take it.