问题
选择题
Many farmers have got lots of ______ and got much money by selling the ______. [ ]
A. cow; beef
B. cows; beef
C. cow; beefs
D. cows; beefs
答案
答案：B
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Many farmers have got lots of ______ and got much money by selling the ______. [ ]
A. cow; beef
B. cows; beef
C. cow; beefs
D. cows; beefs
答案：B