Geography is the study of the countries of the world and of such things ______ the land, seas, climate, towns, and population.
A．as B．that C．which D．what
Late again! What’s your ______ this time?
A．expression B．saying C．meaning D．excuse
The professor was so ______, hardly anyone came to class.
A．popular B．boring C．friendly D．lively
Jake’s passed his exams. We’re going out to ______.
A．joke B．invite C．celebrate D．argue
We couldn’t understand: what could ______ his sudden change of mind?
A．enjoy B．explain C．accept D．mean
I didn’t mean to break your vase—it was just ______.
A．an accident B．an advantage C．an agreement D．an experience
