China’s economic development has made ______ rapid progress in the past 20 years and young people have made ______ great contribution to this progress.
A. /; a B. the; a C. a; a D. /; /
China’s economic development has made ______ rapid progress in the past 20 years and young people have made ______ great contribution to this progress.
A. /; a B. the; a C. a; a D. /; /
A