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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