A．They will find out what its people like.
B．They will argue in favor of this country and the language.
C．They will know the country and its people better.
D．They will like its inhabitants and their language.

A．The job is not rewarding but challenging.
B．The job is both challenging and rewarding.
C．The job has both its strength and weakness.
D．The job is hard work and the pay is not satisfactory.