Each country, of course, in Copenhagen has its own particular priorities and concerns, which is why agreement is so difficult to reach.
A. the; an
B. /; an
C. a; the
D. /; the
网友回答
A. the; an
(答案→)B. /; an
C. a; the
D. /; the
解析：考查冠词。国家前面不加冠词，如：in China,in America,所以应是in Copenhagen
，第二个空是泛指一条协议，故用an agreement。所以选B。