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Great attention must be paid ______ agriculture, especially in China, ________ population is the largest in the world.

       A．to be developed ; whose                      B．to develop ; which 

       C．to developing ; whose                         D．to developing ; which

Great attention must be paid to__________agriculture, especially in China,__________population is the largest in the world.

A.develop; which    B.develop; woose

C.developing;which   D．developing;whose

Great attention must be paid to　 agriculture, especially in China,　 population is the largest in the world.

A.develop; which　 B.develop; whose

C.developing;which　 D．developing;whose