15．The population of Chinato many times what it was in 1949 and most of its population fa

问题补充：

15．The population of Chinato many times what it was in 1949, and most of its population

farmers.

A. have grown; are

B. have grown; is

C. has grown; is

D. has grown; are

答案：

A. have grown; are

B. have grown; is

C. has grown; is

(答案→)D. has grown; are

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