问题
单项选择题
The population of the earth（）increasing fast. One third of the population here（）workers.
A.is;are
B.is;hasbeen
C.are;is
D.is;was
答案
参考答案：A
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The population of the earth（）increasing fast. One third of the population here（）workers.
A.is;are
B.is;hasbeen
C.are;is
D.is;was
参考答案：A