Why must Professor Johnson leave by 8:30
He is taking （）home tonight.

A．Chinese foods are also available.
B．All the items provided are hot food.
C．Free continental breakfast is provided.
D．Breakfast can be taken away at weekends.

A．changes with time of the year
B．depends on exchange rates of the day
C．is exactly the same all over the world
D．is likely to differ from country to country